Cassel Dixon, federal prisoner # 12972-058, appeals from the denial of his 28 U.S.C. § 2241 petition, in which he challenged his conviction for a drug conspiracy. The district court determined that Dixon’s claims would be properly raised in *366 a 28 U.S.C. § 2255 motion and that Dixon could not proceed under § 2255’s savings clause.

Dixon, through counsel, asserts that his 210-month sentence exceeded the statutory maximum pursuant to United States v. Booker, 543 U.S. 220, 125 S.Ct. 738, 160 L.Ed.2d 621 (2005), and Blakely v. Washington, 542 U.S. 296, 124 S.Ct. 2531, 159 L.Ed.2d 403 (2004). He maintains that he is challenging the legality of his detention rather than his conviction because he should have been released from prison in 2000. Dixon also contends that he should be allowed to proceed under the § 2255 savings clause because Booker and Blakely are mere extensions of established law, because he is serving time for a nonexistent offense, and because his Booker and Blakely claims were foreclosed at the time of his direct appeal and first § 2255 motion.

The district court properly determined that Dixon’s claims should be raised in a § 2255 motion. See Tolliver v. Dobre, 211 F.3d 876, 877-78 (5th Cir. 2000). Dixon’s argument that he should be permitted to proceed under the savings clause is unavailing in light of this court’s decision in Padilla v. United States, 416 F.3d 424, 426-27 (5th Cir. 2005).

AFFIRMED.