|TIn 2000, petitioner Rodney E. Barnett was convicted by a jury in the Mississippi County Circuit Court, Chickasawba District, of the capital murder of Lester Frazier and was sentenced to life imprisonment without parole. We affirmed. Barnett v. State, 346 Ark. 11, 53 S.W.3d 527 (2001).
In 2006, Barnett filed in this court a pro se petition to reinvest jurisdiction in the circuit court to consider a petition for writ of error coram nobis, in which he alleged that the prosecutor withheld material evidence to bolster the testimony of one of its witnesses, Larry Black. Specifically, Barnett contended that the prosecutor withheld jail records that would have supported his claim that he never shared a jail cell with Black and, thus, Black’s testimony regarding a jail-house confession could not have been credible. The petition was denied on the ground that Barnett’s claim that he did not share a jail cell with Black was made a part of the record through the cross-examination of Black, and, therefore, coram-nobis relief was not | ^appropriate where Barnett failed to demonstrate some fundamental error of fact extrinsic to the record. Barnett v. State, CR-00-1384, 2007 WL 185098 (Ark. Jan. 25, 2007) (unpublished per curiam).
Now before us is Barnett’s second pro se petition to reinvest jurisdiction in the circuit court to consider a petition for writ of error coram nobis.1 A petition for leave to proceed in the circuit court is necessary because the circuit court can entertain a petition for writ of error coram nobis after a judgment has been affirmed on appeal only after we grant permission. Cromeans v. State, 2013 Ark. 273, 2013 WL 3179379 (per curiam) (citing Sparks v. State, 2012 Ark. 464, 2012 WL 6218471 (per curiam)); Grant v. State, 2010 Ark. 286, 365 S.W.3d 894 (per curiam) (citing Newman v. State, 2009 Ark. 539, 354 S.W.3d 61). This court will grant such permission only when it appears that the proposed attack on the judgment is meritorious. Echols v. State, 354 Ark. 414, 418, 125 S.W.3d 153, 156 (2003). In making such a determination, we look to the reasonableness of the allegations of the petition and to the existence of the probability of the truth thereof. Id.
A writ of error coram nobis is an extraordinarily rare remedy more known for its denial than its approval. Cromeans, 2013 Ark. 273 (citing Howard v. State, 2012 Ark. 177, 403 S.W.3d 38). Coram-nobis proceedings are attended by a strong presumption that the judgment of conviction is valid. Greene v. State, 2013 Ark. 251, 2013 WL 2460096 (per curiam) (citing Newman, 2009 Ark. 539, 354 S.W.3d 61). The function of the writ is to secure relief from a judgment rendered while there existed some fact that would *686have prevented its rendition if it had been known to the circuit court and which, through no negligence or fault of-the defendant, was not brought forward before rendition of the judgment. Id. The petitioner has the burden of demonstrating | sa fundamental error of fact extrinsic to the record. Williams v. State, 2011 Ark. 541, 2011 WL 6275431 (per curiam).
The writ is allowed only under compelling circumstances to achieve justice and to address errors of the most fundamental nature. Cromeans, 2013 Ark. 273 (citing McDaniels v. State, 2012 Ark. 465, 2012 WL 6218480 (per curiam)). We have held that a writ of error coram nobis is available to address certain errors that are found in one of four categories: (1) insanity at the time of trial, (2) a coerced guilty plea, (3) material evidence withheld by the prosecutor, or (4) a third-party confession to the crime during the time between conviction and appeal. Greene, 2013 Ark. 251.
As grounds for the writ, Barnett asserts in the instant petition that the prosecutor withheld exculpatory evidence and knowingly allowed the State’s witnesses to commit perjury. Specifically, Barnett contends that the prosecutor withheld information pertaining to a confidential informant, his identity, and a statement made by him to police regarding the murder for which Barnett was convicted. Barnett asserts that the information possessed by this confidential informant, if it had been known to him at the time of trial, could have been used to impeach the testimony of the State’s witnesses, Larry Black and Donneitha Bradford.2 Barnett further states that a family friend, Carla Johnson, later discovered the identity of the | ¿confidential informant to be Floyd Riley and that Johnson interviewed Riley regarding his knowledge of the murder. Appended to the petition is Johnson’s sworn affidavit in which she avers that, during one such interview, Riley explained to her that Bradford admitted to killing the victim with her boyfriend, Frank Melton; that Bradford never mentioned Barnett’s name to Riley in her description of the crime; and that, on the night of the murder, Melton “was spending money with blood on it to buy drugs from Larry Black.”
Suppression of material exculpatory evidence by the State falls within one of the four categories of coram-nobis relief. Buckley v. State, 2010 Ark. 154, 2010 WL 1255763 (per curiam). When evidence favorable to the defense is wrongfully withheld by the State, it is a violation of Brady v. Maryland, 373 U.S. 83, 83 S.Ct. 1194, 10 L.Ed.2d 215 (1963) and cause to grant a writ of error coram nobis. Hooper v. State, 2015 Ark. 108, 458 S.W.3d 229 (per curiam). In Strickler v. Greene, 527 U.S. 263, 119 S.Ct. 1936, 144 L.Ed.2d 286 (1999), the Supreme Court revisited Brady and declared that, when the petitioner contends that material evidence was not disclosed to the defense, the petitioner must show that “there is a reasonable probabili*687ty that, had the evidence been disclosed to the defense, the result of the proceeding would have been different.” 527 U.S. at 280, 119 S.Ct. 1936 (quoting United States v. Bagley, 473 U.S. 667, 682, 105 S.Ct. 3375, 87 L.Ed.2d 481 (1985)). In Strickler, the Court also set out the three elements of a true Brady violation: (1) the evidence at issue must be favorable to the accused, either because it is exculpatory, or because it is impeaching; (2) the evidence must have been suppressed by the State, either willfully or inadvertently; and (3) prejudice must have ensued. Strickler, 527 U.S. 263, 119 S.Ct. 1936.
In the instant petition, Barnett fails to demonstrate a Brady violation that would warrant issuance of the writ. Barnett contends that the identity of the confidential informant was | ¡(unknown to him at the time of trial but that the prosecutor and the circuit court were aware of the informant’s identity because the informant was subpoenaed to testify at Bradford’s trial. As Riley testified at the trial of Barnett’s accomplice, it is clear that the defense was aware, or could have been aware, of his identity and testimony at the time of trial. Moreover, Barnett sets forth no facts to show that the defense could not have obtained the identity of the confidential informant or that the prosecutor refused to disclose any requested information regarding the confidential informant, and a review of the record in Barnett’s direct appeal does not reveal that the identity of the confidential informant was ever requested by the defense through discovery.3 Where a petitioner offers nothing to show that information was concealed from the defense, and the issue could have been determined with certainty at the time of trial, the petitioner has not demonstrated a Brady violation that warrants the issuance of a writ of error córam nobis. Sparks, 2012 Ark. 464.
Because Barnett has not met his burden of establishing a fundamental error of fact extrinsic to the record sufficient to overcome the strong presumption that the judgment of conviction in his case is valid, he has not established a ground to warrant issuance of the writ.4
Petition denied.