11Appellant Fred Lee Williams brings this appeal from the trial court’s dismissal of his pro se petition for writ of error coram nobis.1 Williams argues that the writ should have been issued because the State violated Brady v. Maryland, 373 U.S. 83, 83 S.Ct. 1194, 10 L.Ed.2d 215 (1963), suborned perjury and breached the agreement he entered into with the State before entering a plea of guilty by not disclosing to the defense certain statements to the police and concealing the testimony of a witness at a trial in another case.2 He further argues that the trial court erred | ¡.by treating his petition as a petition claiming relief on grounds of ineffective assistance of counsel and not addressing his Brady allegations and his claim that he is innocent.3 Because we hold that the trial court’s dismissal of the petition was not an abuse of discretion, we affirm. See State v. Tejeda-Acosta, 2013 Ark. 217, 427 S.W.3d 673.
A writ of error coram nobis is an extraordinarily rare remedy. It is allowed only under compelling circumstances to achieve justice and to address fundamental errors, which fall 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) third-party confession to the crime during the time between conviction and appeal. State v. Larimore, 341 Ark. 397, 17 S.W.3d 87 (2000). Williams did not establish in his petition that his claims for relief fit within one of the four categories.
The trial court did not abuse its discretion by treating Williams’s coram no-bis petition as a petition raising claims of *846ineffective assistance of counsel because Williams’s allegations, while couched as Brady violations, centered on the claim that his attorney when he entered his plea did not competently represent him. Specifically, Williams asserted in his [ acoram no-bis petition that his plea was involuntary because his attorney gave him “infirm legal advice," did not develop a defense to the charge of felon-in-possession-of-a-firearm, and did hot pursue an effective defense at his jury trial on other charges. His allegations concerning his plea of guilty were founded on assertions .that his attorney did not effectively employ the evidence that was available to refute all of the charges against him,, including the charge to which he pleaded guilty and other charges. Ineffective-assistance-of-counsel claims are properly, raised under Arkansas Rule of Criminal Procedure 37.1 (2016), and error coram nobis proceedings are not a substitute for proceedings under the Rule or an opportunity to reassert claims previously raised under the Rule by framing the claims as unsubstantiated violations of Brady. See Nelson v. State, 2014 Ark. 91, 431 S.W.3d 852.
With respect to Williams’s argument that he was forced to plead guilty because the State concealed evidence of a statement given to police by Varetta Butcher in violation of Brady, Williams did not.demonstrate a Brady violation because he did not show that the statement was hidden from the defense. There are three elements of a 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; (3) prejudice must have ensued. Strickler v. Greene, 527 U.S. 263, 119 S.Ct. 1936, 144 L.Ed.2d 286 (1999), The record reflects that reference was made to Butcher’s statement in an affidavit for a search warrant which was filed with the circuit court in 2013,. well before Williams entered his guilty plea in 2014, Accordingly, the statement could have been discovered by the defense, and Williams did not meet his burden of demonstrating a fundamental error of |4fact extrinsic to the record that, was concealed from the defense. See Roberts v. State, 2013 Ark. 56, 425 S.W.3d 771.
To the extent that Williams argued in his petition that his plea was coerced, he contended only that the State’s actions influenced his decision to enter a plea of guilty. We have held that the level of coercion necessary to establish a ground for the writ requires a showing that the plea was the product of fear, duress, or threats of mob violence. Thacker v. State, 2016 Ark. 350, at 6, 500 S.W.3d 736, 740. Williams did not assert that his plea was a product of those factors.
Likewise, Williams’s argument that he is actually innocent of the offense to which he pleaded guilty does not establish a ground for the writ because it constitutes a direct attack on the judgment. See Scott v. State, 2017 Ark. 199, at 3, 520 S.W.3d 262 (claim of actual innocence amounts to a challenge to the sufficiency of the evidence and is a direct challenge on the judgment that is not cognizable in a coram nobis proceeding).
Affirmed.