This habeas corpus proceeding under 28 U.S.C. § 2255 arises out of the 2008 conviction upon a guilty plea of the Petitioner, Oscar Alphonso Rosario,1 for a cocaine distribution conspiracy. It appears to be prompted by the impending sentencing of Mr. Rosario, who has pled guilty in the United States District Court for the Southern District of New York to charges of illegal reentry and separate charges of possession with intent to distribute a controlled substance illegally.
On December 17, 2008, I sentenced Mr. Rosario to 60 months incarceration, the mandatory minimum sentence, followed by *126four years of supervised release. Mr. Rosario was released from Bureau of Prisons ("BOP") custody on September 22, 2011 to a detainer issued by Immigration and Customs Enforcement ("ICE"). He was thereafter deported.
Now having at some point illegally made his way back into the United States, Mr. Rosario seeks to vacate his guilty plea before me in light of evidence that Annie Dookhan, a chemist working at a Massachusetts state testing laboratory, falsified the results of several drug tests. Mr. Rosario argues that the Government's failure to disclose information concerning Ms. Dookhan's fraudulent actions violated its obligations under Brady v. Maryland , 373 U.S. 83, 83 S.Ct. 1194, 10 L.Ed.2d 215 (1963), and rendered his guilty plea unknowing and involuntary.
For the reasons stated below, I will deny the petition for a writ of habeas corpus and anticipatorily indicate my disinclination to grant a writ of error coram nobis if it was to be presented to me on this record.
I. BACKGROUND
A. Factual Background Regarding Mr. Rosario's 2006 Transactions
On May 1, 2007, Oscar Alphonso Rosario was charged along with fifteen other defendants in a sealed complaint assigned to me in this court with conspiracy to possess with intent to distribute and to distribute cocaine. The Complaint detailed an extensive investigation conducted by the Drug Enforcement Agency ("DEA") and Massachusetts State Police ("MSP") into a cocaine distribution network operating in Massachusetts. During the course of the investigation, law enforcement officers executed multiple wire taps and recorded several phone calls between members of the distribution network.
As pertinent to Mr. Rosario's involvement in the conspiracy, law enforcement officers intercepted a series of telephone calls between Mr. Rosario and two other members of the conspiracy, Plinio Vizcaino and Yefrey Rodriguez,2 discussing the purchase and sale of a multi-kilogram quantity of cocaine. During the first call, on December 10, 2006, Mr. Vizcaino asked Mr. Rosario whether he had "a couple of whole cards," referring to kilogram quantities of cocaine. Mr. Rosario responded that he did not, and Mr. Vizcaino told him he needed "at least three." Mr. Rosario said that he would "call 'him' and let Vizcaino know" about the price.
During the second phone call on December 14, 2006, Mr. Rosario requested a kilogram of cocaine from Mr. Vizcaino and asked if " 'the cards' [referring to the cocaine] were 'white' (high quality) and not 'beige.' " Mr. Rosario then asked Mr. Vizcaino if he would bring "the cards" to Mr. Rosario. Later that day, Mr. Rosario again spoke to Mr. Vizcaino and indicated that a "Marlon" was going to buy "four cards" from Mr. Rosario. Mr. Rosario said he would get three from a friend and that he "was counting on 'the one' from" Mr. Vizcaino. Intercepted phone calls suggest that Mr. Vizcaino did, in fact, sell one kilogram of cocaine to Mr. Rosario. On December 16, 2006, Mr. Vizcaino delivered another 400 grams of cocaine to Mr. Rosario.
*127Though intercepted calls reveal that Mr. Rosario and Mr. Vizcaino continued to purchase and sell cocaine from one another at least through the end of December 2006, the Government focused its case against Mr. Rosario on the two transactions on December 14 and 16, 2006.3 Mr. Rosario's only involvement beyond December 2006 were two phone calls from February 21, 2007, during which he asked Mr. Vizcaino if he had met with "Fiera." In these calls, Mr. Vizcaino told Mr. Rosario that he was "working" and that he would "be 'a few seconds'," but there is no indication that Mr. Rosario was looking to buy or sell drugs or was personally involved in any other drug transactions.
During the course of the investigation, law enforcement agents also made four seizures of cocaine between February and April 2007. In total, agents seized seventeen kilograms of cocaine. Two kilograms seized on February 22, 2007 were transmitted to the Massachusetts Department of Public Health for testing. The drugs were positively identified as cocaine by Chemists Della Saunders and Annie Dookhan on March 19, 2007.4 Nothing in the record connected these two kilograms of cocaine to Mr. Rosario: the two kilograms were seized as part of the execution of a search warrant for an apartment where co-Defendants Luis Castillo, Luis Rosario, and Carlos Bravo were arrested. There is no evidence that Mr. Rosario was present at that apartment or had any contact with Mr. Castillo, Luis Rosario, or Mr. Bravo.
The Government has consistently conceded before me that the 4.4 kilograms of cocaine discussed in the intercepted phone calls between Mr. Rosario and Mr. Vizcaino were never recovered by law enforcement.
B. Procedural Background and the Present Petition
1. The Original Prosecution
On June 14, 2007, a grand jury in this district charged Mr. Rosario, along with fifteen co-defendants, with conspiracy to possess with intent to distribute and to distribute cocaine, in violation of 21 U.S.C. § 846. At the time, Mr. Rosario was already in custody, having self-surrendered on May 10, 2007. On August 14, 2008, Mr. Rosario, along with his co-defendant Devir Leal, pled guilty without a formal plea agreement with the Government. During the plea colloquy, the Government stated that, had the case proceeded to trial, it would have relied on the conversations between Mr. Rosario and Mr. Vizcaino to establish that Mr. Rosario intended to purchase and sell cocaine and that he was accountable for 4.4 kilograms of cocaine.
During the sentencing phase, Mr. Rosario objected to the quantity of drugs attributed to him but did not contest the fact that he purchased drugs from Mr. Vizcaino or that the drugs were, in fact, cocaine. In particular, Mr. Rosario argued that his statement to Mr. Vizaino that he would get three kilograms of cocaine from *128someone else was puffery and that he should be held responsible for only 1.4 kilograms of cocaine.5
Mr. Rosario filed his initial sentencing memorandum on November 12, 2008, in which he raised this objection to the quantity of drugs, along with objections to the calculation of his criminal history category and to the Government's denial of a safety valve proffer. On November 20, 2008, I held the initial sentencing hearing and heard arguments from both parties with respect to the quantity of drugs and to Mr. Rosario's eligibility for a safety valve proffer. In response to representations from counsel that they would discuss further the possibility of a safety valve proffer, I continued the hearing.
On December 11, 2008, Mr. Rosario filed a supplemental sentencing memorandum, raising similar arguments concerning the calculation of his criminal history category. On December 17, 2008, he filed a letter stating that he did not go forward with the safety valve proffer. That same day, following further hearing, I sentenced Mr. Rosario to 60 months incarceration followed by a four-year term of supervised release with credit for time served. As I reported in the Judgment papers, I adopted the factual findings detailed in the Pre-Sentence Report, specifically the drug weight of 4.4 kilograms. However, I varied from the Guideline Range and sentenced Mr. Rosario only to the mandatory minimum sentence.
Mr. Rosario was released from Bureau of Prisons custody to an ICE detainer on September 22, 2011 and was deported on November 17, 2011. Since the Probation Office received no information that he reentered the country, his period of supervised release was terminated on September 21, 2015, its original expiration date.
2. The Present Petition
On June 30, 2017, a criminal complaint issued in the Southern District of New York against Mr. Rosario for illegally reentering the United States, in violation of 8 U.S.C. § 1326.6 See United States v. Rosario-Bautista . Criminal Action No. 18-00009-ER, Dkt. No. 1 (S.D.N.Y. June 30, 2017). On January 5, 2018, the Government filed a multi-count information, charging Mr. Rosario both with illegal reentry into the United States and with possession with intent to distribute a controlled substance *129illegally, in violation of 21 U.S.C. § 841. Id. at Dkt. No. 12 (S.D.N.Y. Jan. 5, 2018). That same day, Mr. Rosario waived his right to an indictment. Id. at Dkt. No. 13 (S.D.N.Y Jan. 5, 2018).
On September 11, 2018, Mr. Rosario filed a motion to dismiss the information with respect to the illegal reentry count. That motion was denied by Judge Edgardo Ramos of the Southern District of New York on November 5, 2018. Id. at Dkt. No. 34 (S.D.N.Y. Nov. 7, 2018).
On February 11, 2019, Mr. Rosario filed the present petition for a writ of habeas corpus in this court to vacate his conviction on the basis that his plea was not knowing and voluntary because Annie Dookhan was involved in testing at least some of the cocaine seized during the investigation of the cocaine conspiracy.7 The Government responded to the petition in due course. Mr. Rosario subsequently pled guilty in the Southern District of New York on February 26, 2019 and is scheduled to be sentenced on July 24, 2019.8 Id. at Dkt. No. 46 (S.D.N.Y. May 23, 2019).
On March 4, 2019, I ordered the parties to file further submissions responding to the question whether Mr. Rosario was "in custody" and consequently, may pursue a § 2255 motion. I also ordered the transcripts of certain prior proceedings in this court be produced on an expedited basis. The transcripts of the Plea Colloquy and the November 2008 Sentencing hearing were produced and the parties have completed filing their submissions.
II. PROCEDURAL BARRIERS TO HABEAS RELIEF
As a preliminary matter, Mr. Rosario may proceed on his petition for habeas relief only if he satisfies the procedural requirements set forth in 28 U.S.C. § 2255. To be entitled to relief, Mr. Rosario must: (A) be "in custody under sentence of a court"; and, (B) must file his petition within one year from the latest of - (1) "the date on which the judgment of conviction becomes final;" (2) "the date on which the impediment to making a motion created by governmental action ... is removed;" (3) "the date on which the right asserted was initially recognized by the Supreme Court ... and made retroactively applicable to cases on collateral review;" or (4) "the date on which the facts supporting the claim ... presented could have been discovered through the exercise of due diligence." 28 U.S.C. §§ 2255(a), 2255(f).9 Mr. Rosario *130has failed to satisfy both the custody and the timeliness requirements and therefore may not proceed under section 2255.
A. Custody
Under federal law, any individual seeking post-conviction relief through a writ of habeas corpus must be "in custody" in order to maintain a statutory cause of action10 under the Anti-Terrorism and Effective Death Penalty Act ("AEDPA"). See 28 U.S.C. § 2255.11 Specifically, the language of section 2255 makes clear that "the habeas petitioner be 'in custody' under the conviction or sentence under attack at the time his petition is filed." Maleng v. Cook , 490 U.S. 488, 490-91, 109 S.Ct. 1923, 104 L.Ed.2d 540 (1989) (per curiam) (emphasis added). "The custody requirement of the habeas corpus statute is designed to preserve the writ of habeas corpus as a remedy for severe restraints on individual liberty," Hensley v. Municipal Court, San Jose Milpitas Judicial District , 411 U.S. 345, 351-52, 93 S.Ct. 1571, 36 L.Ed.2d 294 (1973), and the Supreme *131Court has generally interpreted the phrase "in custody" broadly to apply both to physical imprisonment and "other restraints on a man's liberty [that are] not shared by the public generally." Jones v. Cunningham , 371 U.S. 236, 240, 83 S.Ct. 373, 9 L.Ed.2d 285 (1963).
In doing so, the Supreme Court has held that a criminal defendant is "in custody" if he has been released on parole (or supervised release). Id. at 241-43, 93 S.Ct. 477. The Court has also recognized that a defendant released on personal recognizance - for example, because his sentence is stayed while his conviction is being reviewed on appeal or through collateral attack, or because his conviction had been vacated and he has been released on bail (or bond) pending retrial - is also "in custody" because the restraints on his freedom are functionally identical to the restraints placed on someone on parole. Hensley , 411 U.S. at 351-52, 93 S.Ct. 1571 ; see also Justices of Boston Municipal Court v. Lydon , 466 U.S. 294, 300, 104 S.Ct. 1805, 80 L.Ed.2d 311 (1984). Similarly, "for purposes of habeas relief, consecutive sentences should be treated as a continuous series; a prisoner is 'in custody' ... 'if any consecutive sentence [the prisoner is] scheduled to serve was imposed as the result of a deprivation of constitutional rights.' " Garlotte v. Fordice , 515 U.S. 39, 40-41, 115 S.Ct. 1948, 132 L.Ed.2d 36 (1995) (citing Peyton v. Rowe , 391 U.S. 54, 88 S.Ct. 1549, 20 L.Ed.2d 426 (1968) (holding that a prisoner is "in custody" and may challenge a sentence, the term of which has run, under § 2241 if he is serving a consecutive sentence imposed at the same time as the challenged sentence when the petition is filed.)); see also Maleng , 490 U.S. at 493, 109 S.Ct. 1923 (holding that a petitioner in federal custody was "in custody" under § 2254 and therefore could challenge a state sentence that he was serving concurrently).
Though the Court has construed the phrase "in custody" broadly, it has stopped short of allowing its extension to include a petitioner "whose sentence has fully expired at the time his petition is filed, simply because that conviction has been used to enhance the length of a current or future sentence imposed for a subsequent conviction." Maleng , 490 U.S. at 491, 109 S.Ct. 1923 (emphasis in original). "[O]nce a sentence imposed for a conviction has completely expired, the collateral consequences of that conviction are not themselves sufficient to render an individual 'in custody' for the purpose of a habeas attack upon it." Id. at 492, 109 S.Ct. 1923 ; see also Tinder v. Paula , 725 F.2d 801, 803 (1st Cir. 1984) ("After the expiration of a term of imprisonment, parole, or probation, however, the state no longer has special supervisory authority over the person. Thus, a sentence that has been fully served does not satisfy the custody requirement of the habeas statute, despite the collateral consequences that generally attend a criminal conviction."); Johnson v. Ashe , 421 F. Supp. 2d 339, 342 (D. Mass. 2006) (holding that the requirement that the petitioner register as a sex offender upon release from prison does not mean he would continue to be "in custody" under AEDPA). A contrary ruling, the Supreme Court held, "would read the 'in custody' requirement out of the statute." Maleng , 490 U.S. at 492, 109 S.Ct. 1923.
I conclude Mr. Rosario was not "in custody" for the purposes of a § 2255 challenge to his 2008 conviction at the time he filed the petition now before me. Mr. Rosario was released from BOP custody to an ICE detainer on September 20, 2011 and subsequently deported on November 17, 2011. His period of supervised release was formally terminated on September 21, *1322015, more than three years before the present petition for habeas relief was filed and more than one year before he returned to BOP custody in the Southern District of New York in connection with the separate charge now pending against him there. See United States v. Rosario , Criminal Action No. 18-00009-ER, Dkt. No. 4 (S.D.N.Y. Aug. 2, 2017).
Consequently, between September 21, 2015 and December 2016, when he was first arrested in New York, there were no formal restraints on Mr. Rosario's liberty, much less constraints that were functionally identical to those placed on someone on parole. See e.g., Hensley , 411 U.S. at 351-52, 93 S.Ct. 1571. Any period of incarceration or supervision imposed after September 21, 2015 was imposed by a New York court in conjunction with a prosecution against him for his actions in that state, not in connection with the 2008 conviction in this court. While it is certainly possible that Mr. Rosario's freedom should have been restricted after his return to the United States as a result of my judgment imposing supervision in this case, no such restriction was, in fact, imposed.
Furthermore, the only restriction that remained in force and limited Mr. Rosario in any way when he returned to the United States was the order of removal that that I signed after his sentencing. However, this kind of injunctive order, which apparently has since been fully executed, did not impose restraints on liberty equivalent to those placed on a person under supervision. Cf. Hensley , 411 U.S. at 351-52, 93 S.Ct. 1571 ; see also Johnson , 421 F. Supp. 2d at 342 (holding that mandatory registration as a sex offender does not constitute "custody" under AEDPA).
Mr. Rosario cannot seek post-conviction relief because he was not "in custody" as required by 28 U.S.C. § 2255. That being said, I recognize Mr. Rosario may still be entitled to relief through a writ of error coram nobis. See, e.g., United States v. Morgan , 346 U.S. 502, 512-13, 74 S.Ct. 247, 98 L.Ed. 248 (1954) ; United States v. Sawyer , 239 F.3d 31, 37 (1st Cir. 2001). Mr. Rosario has not expressly sought such relief at this point.
Nevertheless, I will address the current petition on the merits as if it were a petition for a writ of error coram nobis and offer anticipatory indicative observations, cf. FED. R. APP. P. 12.1, in order to avoid the risk of further delaying his sentencing12 in the Southern District of New York.
B. Timeliness
Before turning to the merits of Mr. Rosario's claim for relief from the perspective of coram nobis , I pause briefly to observe that, even if Mr. Rosario were still in custody when he filed the present petition for relief under § 2255, his petition nevertheless would be untimely. Section 2255 imposes a one-year statute of limitations on all petitions for habeas relief that starts to run from the latest of:
(1) the date on which the judgment of conviction becomes final; (2) the date on which the impediment to making a motion created by governmental action in violation of the Constitution or laws of the United States is removed, if the movant was prevented from making a motion by such governmental action; (3)
*133the date on which the right asserted was initially recognized by the Supreme Court, if that right has been newly recognized by the Supreme Court and made retroactively applicable to cases on collateral review; or (4) the date on which the facts supporting the claim or claims presented could have been discovered through the exercise of due diligence.
28 U.S.C. § 2255(f).
Here, Mr. Rosario filed his habeas petition on February 11, 2019, almost a decade after his conviction became final following entry of judgment and expiration of time to appeal. There is no allegation that the Government affirmatively prevented Mr. Rosario from seeking habeas relief, even if it did not inform Mr. Rosario personally of Annie Dookhan's misconduct. Nor does Mr. Rosario rest his claim on some new rule of constitutional law. Consequently, the present petition is timely only if the "the facts supporting the claim or claims presented could have been discovered through the exercise of due diligence" on or after February 11, 2018, one year before the date on which the present petition was filed. 28 U.S.C. § 2255(f)(4).
That is not the circumstance here. To be sure, Mr. Rosario could not reasonably have discovered the underlying factual predicate for his claim - that Annie Dookhan falsified laboratory results - before August 2012, when news of her misconduct came to light. However, given the publicity surrounding the allegations against Annie Dookhan, I cannot say that, had Mr. Rosario been present in the United States, he would have been unable to find information about Annie Dookhan, and about its potential relation to his case, through an exercise of due diligence prior to 2018. At the latest, Mr. Rosario would have been on notice by 2014 - when two of his co-defendants, Carlos Bravo and Luis Rosario, sought to withdraw their plea of guilty on the basis that the fraud perpetuated by Annie Dookhan rendered their pleas unknowing and involuntary - that something was amiss.
I recognize the statute of limitations under § 2255 is not unyieldingly rigid. Both the Supreme Court and the First Circuit have held that the "one-year limitations period is subject to equitable tolling in appropriate instances." Ramos-Martinez v. United States , 638 F.3d 315, 322 (1st Cir. 2011) (applying the reasoning of Holland v. Florida , 560 U.S. 631, 130 S.Ct. 2549, 177 L.Ed.2d 130 (2010) (holding that the one-year limitations period applicable to state prisoners seeking habeas relief is subject to equitable tolling)). The statute of limitations may be tolled "in cases in which circumstances beyond the litigant's control have prevented [him] from promptly filing." Id. (internal quotations and citations omitted). To carry his burden and show that he is entitled to equitable tolling, a habeas petitioner "must show (1) that he has been pursuing his rights diligently; and (2) that some extraordinary circumstance stood in his way and prevented timely filing." Id. at 323 (internal quotations and citations omitted).13
*134Though he has not done so explicitly, Mr. Rosario might argue that the statute of limitations should be tolled while he was outside the United States because he could not reasonably have sought relief during that time. I am not unsympathetic to this argument, especially because Mr. Rosario did not voluntarily leave the country at the conclusion of his period of incarceration: he was removed pursuant to an ICE detainer. I am not convinced, however, that this constitutes an "extraordinary circumstance" that warrants equitable tolling, even if there was some evidence of record - or even some suggestion - that Mr. Rosario had otherwise been diligent in pursuing his rights.
However, if the statute of limitations could be equitably tolled while Mr. Rosario was out of the country, the clock certainly started to run once he returned. At the absolute latest, then, Mr. Rosario had one year from August 1, 2017, when he returned to federal custody, to seek habeas relief in this court. He failed to do so.
Formally, Mr. Rosario's petition under § 2255 is time-barred. However, here again, cf. supra note 8, the Government has declined to object to the petition on the basis of the statute of limitations. See Smoak v. United States , 12 F. Supp. 3d 254, 262 (D. Mass. 2014) ("Statutes of limitations in the habeas context are affirmative defenses ... Although a court may raise a statute of limitations issue in a 2255 case sua sponte, generally it should give habeas petitioners advance notice and an opportunity to respond to a statute of limitations defense before dismissing a case sua sponte." (citing, inter alia, Turner v. United States , 699 F.3d 578, 587 n. 9 (1st Cir. 2012) )). Moreover, I note petitions for writs of error coram nobis are generally not subject to statutes of limitations. See, e.g., United States v. Morgan , 346 U.S. 502, 507, 74 S.Ct. 247, 98 L.Ed. 248 (1954).
In the interest of completeness and more particularly because the petitioner has not had an opportunity to address my sua sponte consideration of the statute of limitations, I will not dismiss the petition on the basis that it is untimely under § 2255. I will instead continue to consider the merits on an indicative basis.
III. THE MERITS
In his petition for relief under section 2255, Mr. Rosario argues that his guilty plea was neither knowing nor voluntary because it was secured as a result of fraud: in essence, Mr. Rosario argues, he would not have pled guilty if he had known that some of the cocaine seized as a result of the investigation into the conspiracy in which he was involved was tested by Annie Dookhan. Inherent in this argument is his claim that, by failing to disclose information concerning Annie Dookhan's fraudulent conduct, the Government violated its obligations under Brady v. Maryland , 373 U.S. 83, 83 S.Ct. 1194, 10 L.Ed.2d 215 (1963).
I have already determined that Mr. Rosario has failed to satisfy the procedural requirements set forth in section 2255, and *135therefore, does not have a statutory cause of action to seek habeas relief under AEDPA. See supra Section II.A. However, in such circumstances, I may be called upon to consider his petition as one seeking a writ of error coram nobis consistent with my authority under the All Writs Act, 28 U.S.C. § 1651. See, e.g., Morgan , 346 U.S. at 512-13, 74 S.Ct. 247 ; United States v. Sawyer , 239 F.3d 31, 37 (1st Cir. 2001).
Consequently, I will briefly address whether a writ of coram nobis is, in fact, appropriate here before turning first to Mr. Rosario's Brady argument and then to his argument that his plea was not knowing and voluntary.
A. The Availability of Coram Nobis
At common law, a writ of error coram nobis (or coram vobis ) was "[a] writ of error directed to a court for review of its own judgment and predicated on alleged errors of fact." Coram Nobis , BLACK'S LAW DICTIONARY (10th ed. 2014). Though the Federal Rules of Civil Procedure eliminated the writ in the context of civil litigation, both the Supreme Court and the First Circuit have been clear that the writ is still "available as a remedy of last resort for the correction of fundamental errors of fact or law" in criminal cases. United States v. George , 676 F.3d 249, 253 (1st Cir. 2012) ; see also Morgan , 346 U.S. at 507, 512-13, 74 S.Ct. 247.
Coram nobis is an "extraordinary remedy," and "may not issue when other remedies, including habeas corpus, are available." Murray v. United States , 704 F.3d 23, 27 (1st Cir. 2013). Consequently, a petitioner may not "resort to coram nobis merely because he has failed to meet the AEDPA's gatekeeping requirements" by timely filing a petition for habeas corpus. Barreto-Barreto v. United States , 551 F.3d 95, 103 (1st Cir. 2008) ; see also United States v. Barrett , 178 F.3d 34, 54-55 (1st Cir. 1999).
Here, the factual circumstances of Mr. Rosario's petition present a clean vehicle for the application of the writ: the conduct underlying Mr. Rosario's claim for relief - the fraud perpetrated by Annie Dookhan - was certainly extraordinary and, if relevant to Mr. Rosario's prosecution, could constitute a fundamental error that corrupted at least some of the evidence that may have been offered against him. Moreover, Mr. Rosario did not have recourse to the traditional methods of post-conviction review: Annie Dookhan's wrongdoing did not come to light until after Mr. Rosario had been released from BOP custody and deported from the United States. By the time Mr. Rosario returned to the United States and had access to the courts to raise a habeas claim, his period of supervised release had terminated and he was no longer "in custody" under AEDPA.14 A writ of error coram nobis , then, would provide the only avenue through which Mr. Rosario may challenge the validity of his plea on the basis of fraud perpetrated by Annie Dookhan.
Mr. Rosario might be entitled to relief under a writ of error coram nobis if he can "explain his failure to seek earlier relief from the judgment, show that he *136continues to suffer significant collateral consequences from the judgment, and demonstrate that the judgment resulted from an error of the most fundamental character." George , 676 F.3d at 254 (citing Barrett , 178 F.3d at 56 n. 20 ); see also United States v. Sawyer , 239 F.3d 31, 38 (1st Cir. 2001) ; United States v. Woodward , 2017 WL 4684000 at *4 (D. Mass. Oct. 18, 2017), aff'd 905 F.3d 40, 43 (1st Cir. 2018). "Even if the petitioner meets all three of the conditions in [this] test, the court retains discretion to grant or deny the writ, depending on the facts and circumstances of the individual case." Murray , 704 F.3d at 29-30.
When the claimed error is a failure on the part of the Government to disclose material information, "[the court] will use the materiality standard of Brady v. Maryland ... and its progeny" to evaluate the claim. Id. (citing Brady , 373 U.S. 83, 83 S.Ct. 1194 ). This means that, to succeed, the petitioner must show that the withheld evidence was material, such that there is a "reasonable probability that, had the evidence been disclosed, the result of the proceedings would have been different." Id. However, "[l]ike the three-part eligibility test, materiality is a necessary but not sufficient condition for sustaining a petition for coram nobis on a nondisclosure theory" because a failure to disclose even material evidence may not rise to the level of a "fundamental error" in every circumstance. Id.
Here, Mr. Rosario has satisfied the first two prongs of the tripartite test established to evaluate his petition for a writ of error coram nobis . His immigration circumstances explain his failure to seek earlier relief. He has also demonstrated that he continues to suffer collateral consequences from the judgment, especially because his conviction in this district increases his criminal history category and, by extension, significantly increases his Sentencing Guideline range in the Southern District of New York. See Rosario-Bautista , Criminal Action No. 18-00009-ER, Dkt. No. 44 at 2 (S.D.N.Y. May 17, 2019) (detailing the calculation of the Sentencing Guidelines for Mr. Rosario in the Southern District of New York).15
I therefore focus my attention on the third prong - whether the Government's failure to disclose information concerning Annie Dookhan violated its obligations under Brady , 373 U.S. 83, 83 S.Ct. 1194, and its progeny and constituted a "fundamental error" given the circumstances.
B. The Brady Claim
The Supreme Court in Brady , 373 U.S. 83, 83 S.Ct. 1194, held that "the suppression by the prosecution of evidence favorable to the accused upon request violates due process where the evidence is material either to guilt or punishment, irrespective of the good faith or bad faith of the prosecution." Brady v. Maryland , 373 U.S. 83, 87, 83 S.Ct. 1194, 10 L.Ed.2d 215 (1963). In subsequent cases, the Court clarified that Brady requires prosecutors to turn over all material exculpatory evidence that is in the hands of the government, even if the prosecutor was not aware of the information at the time of trial and even if the defendant does not explicitly request the material. See generally, e.g., Strickler v. Greene , 527 U.S. 263, 119 S.Ct. 1936, 144 L.Ed.2d 286 (1999) (holding that *137Brady requires the prosecutor to provide defense counsel with impeachment evidence, even if that evidence is not explicitly requested); United States v. Agurs , 427 U.S. 97, 96 S.Ct. 2392, 49 L.Ed.2d 342 (1976) (same); Kyles v. Whitley , 514 U.S. 419, 115 S.Ct. 1555, 131 L.Ed.2d 490 (1995) (holding that the material exculpatory evidence must be turned over to the defendant even when it is in the hands of law enforcement and when the prosecutor was unaware of its existence).
For evidence to fall within the scope of Brady , however, it must be material, meaning "there is a reasonable probability that, had the evidence been disclosed to the defense, the result of the proceeding would have been different." United States v. Bagley , 473 U.S. 667, 682, 105 S.Ct. 3375, 87 L.Ed.2d 481 (1985). In this context, "[a] 'reasonable probability' is a probability sufficient to undermine the confidence in the outcome." Id.16 Mr. Rosario cannot make such a showing here. First, the Government during the plea colloquy indicated that, had the case gone to trial, the only evidence against Mr. Rosario would have been a series of phone calls in December 2006 discussing the purchase and sale of cocaine. It stated explicitly that it would not have relied on any cocaine seizures and certainly did not seek to introduce evidence of the cocaine seized on February 22, 2007 and subsequently tested by Annie Dookhan. Though Mr. Rosario argues that he discussed the cocaine seized on February 22, 2007 with Mr. Vizcaino during a recorded phone call, there is no indication that the Government planned to use that phone call, or the drugs, as evidence against Mr. Rosario. I cannot say, then, that impeachment evidence regarding the reliability of laboratory tests is material when there is no basis for concluding the results of those tests likely would have been presented to a jury.
Second, even if the results would have been introduced, and even if the test results, if done properly, would have shown that the evidence seized on February 22, 2007 was not, in fact, cocaine, the outcome of the proceeding would not have changed. Mr. Rosario was charged with, and pled guilty to, conspiracy to possess with intent to distribute cocaine and not with the substantive *138offense. To support such a conviction, the Government needed to show beyond a reasonable doubt simply that Mr. Rosario "had the specific intent to violate the substantive statute" and agreed to do so, not that he actually possessed or distributed cocaine. United States v. Giry , 818 F.2d 120, 125-26 (1st Cir. 1987).
The question whether the substance Mr. Rosario sought to purchase and distribute was, in fact, cocaine - as Mr. Rosario admitted - is irrelevant to the conspiracy charge against him. See, e.g., Giry , 818 F.2d at 126-26 ("[T]he crime of conspiracy, whether under the drug statute or under the general conspiracy statute, is complete upon the agreement to do an unlawful act as implemented by one or more over acts. Factual impossibility is no defense."); United States v. Dixon , 449 F.3d 194, 202 (1st Cir. 2006) ("Since the elements of [inchoate] offenses [including conspiracy and attempt] do not require that the unlawful goal be achieved, factual impossibility is irrelevant."); United States v. Turner , 501 F.3d 59, 70 (1st Cir. 2007) ("While the substantive crime that is the object of the conspiracy may be impossible to achieve, the conspiracy nevertheless qualifies as an offense for which a person may be prosecuted under federal law.").
I cannot say, then, that information about Annie Dookhan's misconduct was "material," even if it was potentially exculpatory or if it could have been valuable for the sake of impeachment had the lab results been presented at trial. Mr. Rosario has not met his burden of showing that the Government violated its obligations under Brady ; he certainly has not shown that the proceedings against him were tainted by a fundamental error such that he is entitled to a writ of error coram nobis. See Murray , 704 F.3d at 30.
C. Whether the Plea Was Knowing and Voluntary
For the sake of completeness, I will also briefly address Mr. Rosario's claim that his plea of guilty was not knowing and voluntary.17 Because a defendant who pleads guilty "simultaneously waives several constitutional rights," "if a defendant's guilty plea is not equally voluntary and knowing, it has been obtained in violation of due process and is therefore void." McCarthy v. United States , 394 U.S. 459, 467, 89 S.Ct. 1166, 22 L.Ed.2d 418 (1969). The requirement that a guilty plea be knowing and voluntary is particularly important because, by entering a plea of guilty, a defendant admits "all essential elements of a criminal charge," including the charge's factual predicates. Id. Consequently, while a guilty plea ordinarily forecloses the usual avenues through which he may challenge his conviction or sentence, a defendant nevertheless may "collaterally attack his sentence on the ground that his guilty plea was not knowing or voluntary." Ferrara v. United States , 456 F.3d 278, 289 (1st Cir. 2006).
Ordinarily, to challenge his guilty plea through a habeas petition, Mr. Rosario would have to show that "some egregiously impermissible conduct ...
*139antedated the entry of his plea" and that "the misconduct influenced his decision to plead guilty or, put another way, that it was material to that choice." Id. The standard is not so clearly articulated in the context of a petition for a writ of error coram nobis , and the First Circuit has cautioned that " '[w]hen a defendant seeks to vacate a guilty plea conviction by way of coram nobis , red flags accompany that request' and 'great caution is warranted.' " Williams v. United States , 858 F.3d 708, 718 (1st Cir. 2017) (citing George , 676 F.3d at 257-58 ). "Because custody no longer attaches and liberty is no longer at stake, an inquiring court should pay particular attention to whether there is some basis for thinking that the defendant is at least arguably guilty," George , 676 F.3d at 257 ; the core of the inquiry remains the question of fundamental error.
Mr. Rosario's claim fails under either standard. First, even if I assume that Annie Dookhan's conduct was sufficiently attributable to the Government to constitute "egregiously impermissible conduct" under Ferrara v. United States , 456 F.3d 278 (1st Cir. 2006),18 Mr. Rosario has not shown that the misconduct influenced his decision to plead guilty. As discussed above, Mr. Rosario was charged with an inchoate offense and the charges were supported through evidence of a series of phone calls that demonstrated Mr. Rosario's intent to purchase cocaine from Mr. Vizcaino and sell it to a third party. There is no indication that Mr. Rosario was connected to the cocaine that was seized on February 22, 2007 and tested by Ms. Dookhan with a colleague, or that any information concerning that seizure influenced his decision to plead guilty to conspiracy. The Government made clear that it did not intend to introduce evidence related to cocaine testing in support of its case-in-chief. Consequently, I cannot say that newly-discovered evidence of Annie Dookhan's wrongdoing would have been material to Mr. Rosario's decision to plead guilty.
In that connection, I find and conclude that Annie Dookhan's conduct, though certainly egregious, does not give rise in this case to the kind of fundamental error that would entitle Mr. Rosario to a writ of error coram nobis . This is especially true since I have found that the Government presented sufficient evidence - in the form of the December 2006 phone calls - from which a jury could find Mr. Rosario guilty of conspiracy to possess with intent to distribute and to distribute cocaine irrespective of any testimony regarding Annie Dookhan.
Based upon the record, I offer an indicative ruling that, even if a request was properly before me, I would decline to issue a writ of error coram nobis in this case to vacate the guilty plea the defendant knowingly and voluntarily entered before me.
IV. CONCLUSION
For the foregoing reasons, the petition for a writ of habeas corpus under § 2255 is *140DENIED. Further finding that a writ of error coram nobis , if properly pressed, should not issue on the record here, I direct the Clerk to Dismiss the case.