Mohamed says that he made the admission -- and others relating to purported terrorism -- after being beaten, hung by his wrists for a week, having a gun held to his head, and held in a dungeon-like cell at the US prison at Guantanamo Bay.

A British newspaper reported Sunday that the "offending article," "How to Build An H-Bomb," was actually published in Rolling Stone and re-posted on other websites.

Mohamed was subject not simply to apparent torture but also to the Bush Administration's extraordinary rendition program, in which terrorist suspects are kidnapped and put on private jets, then dropped in third-party countries that condone torture.