Bump and Update: The Washington Post has the latest.

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Original Post 1/18 9:00 pm

Newsweek's Michael Isikoff and Daniel Klaidman write of the FBI's new theory on the identity of the 20th hijacker and how he got away. He is a Saudi named al-Qahtani, who in late August, 2001 was turned away trying to enter the U.S. in Orlando. The FBI now thinks he was to be the 20th hijacker on United Airlines Flight 93, which crashed Pennsylvania on 9/11.

9/11 ringleader Muhammad Atta was at the Orlando airport that same day and made a call on a pay phone to a Mideastern country—apparently concerned that his guest hadn't gotten off the airplane. A surveillance camera captured Atta making the call. Months later, a Saudi by the same name—al-Qahtani—was captured by U.S. troops in Afghanistan and flown to Guantanamo Bay, Cuba, where investigators later ID'd him as the man in Orlando.

....The Feds once thought [Zacarias] Moussaoui was the 20th hijacker—a theory they quietly abandoned last year when they concluded al-Qahtani was more likely the real one.