Vacated and remanded by unpublished PER CURIAM opinion.

Unpublished opinions are not binding precedent in this circuit.

Keyon Riddick appeals the district court’s order dismissing his 42 U.S.C. § 1983 (2006) complaint without prejudice for failure to comply with an order directing that he file an affidavit as to his exhaustion of administrative remedies. On appeal, Riddick alleges that he placed his responsive affidavit in the prison mailing system on December 25, 2013. We note that Riddick filed a letter with the district court stating that he had filed additional “attachments” to his amended complaint on December 27, 2013. If, as Riddick intimates on appeal, these attachments included his exhaustion affidavit, his papers would have been deemed timely filed pursuant to the prison mailbox rule. See Houston v. Lack, 487 U.S. 266, 276, 108 S.Ct. 2379, 101 L.Ed.2d 245 (1988). Therefore, we vacate the district court’s order and remand for the limited purpose of permitting the district court to make a factual determination as to whether Rid-dick timely placed his exhaustion affidavit in the prison mailing system. The record as supplemented by the district court’s findings will then be returned to this court for further review.

VACATED AND REMANDED.