OPINION
Myron Pryor raises a claim for ineffective assistance of counsel on direct appeal. Ineffective-assistance-of-counsel claims are mixed questions of law and fact, which we review de novo. United States v. Ferguson, 669 F.3d 756, 761 (6th Cir. 2012).
We typically decline to address ineffective-assistance-of-counsel claims on direct appeal, however, unless the “existing record is adequate to assess properly the merits of the claim.” United States v. Hynes, 467 F.3d 951, 969 (6th Cir. 2006) (quoting United States v. Franklin, 415 F.3d 537, 555-56 (6th Cir. 2005)). When an ineffective-assistance-of-counsel claim is raised on direct appeal, the Court and counsel “must proceed on a trial record not developed precisely for the object of litigating or preserving the claim and thus often incomplete or inadequate for this purpose.” Ferguson, 669 F.3d at 762 (quoting Massaro v. United States, 538 U.S. 500, 504-05, 123 S.Ct. 1690, 155 L.Ed.2d 714 (2003)).
We find the record insufficiently developed to support Pryors claim of ineffective assistance of counsel. Pryor argues that his defense counsel failed to submit a properly briefed motion to suppress evidence, and further failed to file a reply. To review Pryors arguments, we would need further evidence, such as an affidavit from Pryors defense attorney stating why he chose not to supply further information pertaining to the motion to suppress. This evidence is not in the record.
We have previously held that a petition under 28 U.S.C. § 2255 is the “preferred mode for raising a claim of ineffective assistance of counsel.” Ferguson, 669 F.3d at 762 (citing Massaro, 538 U.S. at 504, 123 S.Ct. 1690). Deferring ineffective-assistance-of-counsel claims to Section 2255 proceedings allows the matter to be litigated first in the district court, “which is ‘the forum best suited to developing the facts necessary to determining the adequacy of representation’ because it may take testimony from witnesses including the defendant, prosecution, and counsel.” Id. (quoting Massaro, 538 U.S. at 505-06, 123 S.Ct. 1690).
For these reasons, we DISMISS the appeal without prejudice to Pryors right to raise the claim in a proceeding pursuant to 28 U.S.C. § 2255.
PER CURIAM.