April 2002: Al-Qaeda Leader Zubaida Confeseses to FBI that KSM Is 9/11 Mastermind

FBI agents are able to get prisoner Abu Zubaida to confess that Khalid Shaikh Mohammed (KSM) is the mastermind of the 9/11 attacks. Zubaida, captured in Pakistan in March 2002 (see March 28, 2002), is considered a high-ranking prisoner, although there is controversy over just how important he was to al-Qaeda (see Shortly After March 28, 2002). FBI agents Ali Soufan and Steve Gaudin have been interrogating Zubaida using traditional non-coercive interrogation methods, while he is being held in a secret CIA prison in Thailand (see Late March through Early June, 2002). A CIA interrogation team is expected but has not yet arrived. Soufan shows Zubaida a sheaf of pictures of high priority suspects; Zubaida points at KSM’s photo and says, “That’s Mukhtar… the one behind 9/11.” Shortly before 9/11, US intelligence had learned that the alias “Mukhtar” was frequently used by KSM (see August 28, 2001), but this is important confirmation. The more stunning revelation is that KSM is “the one behind 9/11.” [Mayer, 2008, pp. 155; New York Times, 4/22/2009; Newsweek, 4/25/2009] Zubaida proceeds to lay out more details of the 9/11 plot, although exactly what and how much he says is unknown. [Vanity Fair, 7/17/2007] It is unclear how much US intelligence knew about KSM’s role in the 9/11 attacks prior to this, although at least some was known (see (December 2001)).