
    UNITED STATES of America v. Walter HIMMELREICH, Appellant.
    No. 12-2394.
    United States Court of Appeals, Third Circuit.
    Submitted for Possible Summary Action Pursuant to Third Circuit LAR 27.4 and I.O.P. 10.6 Sept. 7, 2012.
    Opinion Filed Sept. 21, 2012.
    James T. Clancy, Esq., Office of United States Attorney, Harrisburg, PA, for Plaintiff-Appellee.
    Walter J. Himmelreieh, Lisbon, OH, pro se.
    Before: SCIRICA, SMITH and CHAGARES, Circuit Judges.
   OPINION

PER CURIAM.

Pro se appellant Walter Himmelreieh is a federal prisoner. Following his 2006 guilty plea to a count of producing child pornography in violation of 18 U.S.C. § 2251(b), we affirmed his conviction and sentence. See United States v. Himmelreich, 265 Fed.Appx. 100 (3d Cir.2008). A collateral attack was unsuccessful. See United States v. Himmelreich, C.A. No. 10-4720 (order denying certificate of ap-pealability entered July 21, 2011).

In March 2012, Himmelreieh wrote to the District Court to request disclosure of a variety of documents, including: grand jury transcripts, FBI case notes, and the presiding District Judge’s case file notes. Himmelreieh explained that he was preparing a “writ of error coram nobis/vobis,” which was to be based on “newly discovered impeachment evidence” that the “lead investigator in this case[ ] ha[d] a history of tampering with evidence.” The District Court denied the motion and denied Him-melreich’s request for reconsideration. He timely appealed.

We have jurisdiction under 28 U.S.C. § 1291 and review for an abuse of discretion. Cf. United States v. Miramontez, 995 F.2d 56, 59 (5th Cir.1993). We detect none. Himmelreieh has failed to show the presence of an ongoing proceeding or a particularized need for the materials, especially those that are unreleased or otherwise privileged. See Fed.R.Crim.P. 6(e)(2)(E); Miramontez, 995 F.2d at 59. His reconsideration motion provided no basis for disturbing the District Court’s judgment. See Long v. Atl. City Police Dep’t, 670 F.3d 436, 446 (3d Cir.2012). To the extent that he wishes to prepare a writ of error coram nobis, he is cautioned that such a writ cannot be used to attack his conviction while he is still “in custody.” See Mendoza v. United States, No. 11-3958, 690 F.3d 157, 159-60, 2012 U.S.App. LEXIS 13225, at *4-5 (3d Cir. N.J. June 28, 2012). He may not pursue coram nobis when other remedies, such as § 2255, remain available. United States v. Denedo, 556 U.S. 904, 911, 129 S.Ct. 2213, 173 L.Ed.2d 1235 (2009). As we explained in our order denying a certificate of appeala-bility, he must obtain our permission if he wishes to file a second or successive collateral attack on his conviction or sentence; an inability to meet that standard does not render § 2255 relief “unavailable” for the purposes of coram nobis. United States v. Rhines, 640 F.3d 69, 72 (3d Cir.2011) (per curiam).

There being no substantial question presented by this appeal, we will summarily affirm the order of the District Court. Id.; see also L.A.R. 27.4; IOP 10.6. 
      
      . The Seventh Circuit has cautioned that these post-trial requests can implicate the jurisdiction of the District Court, as they may be impermissible second or successive collateral attacks. See United States v. Scott, 414 F.3d 815, 816-17 (7th Cir.2005). Because Him-melreich reveals that he intends to submit his petition in the future — he “is preparing” a coram nobis application that he "will” file— we will not find that the District Court lacked jurisdiction on this ground. See id.
      
     
      
      . Himmelreich’s submissions contain the faint air of sovereign-citizen argumentation. See Mot. for Copies 1-2, ECF No. 173 (referring to the District Court as an "Article I Court”; referencing the "Incorporated United States of America”). To continue down that path would be unrewarding. See United States v. Benabe, 654 F.3d 753, 767 (7th Cir.2011).
     