Ali Mohamed, a high-ranking al-Qaeda figure. However, they release him when the FBI says he is a US agent. (Globe and Mail, 11/22/01).
Mohamed, a former US Army sergeant, then will continue to work for al-Qaeda for a number of years. He trains bin Laden's personal bodyguards and trains a terrorist cell in Kenya that later blows up the US embassy there. Meanwhile, at least between 1993 and 1997 he tells secrets to the FBI about al-Qaeda's operations.
He is arrested in late 1998 and subsequently convicted of his role in the 1998 US embassy bombing in Kenya. (CNN, 10/30/98, Independent, 11/1/98) Says a former Egyptian intelligence officer: "For five years he was moving back and forth between the US and Afghanistan. It's impossible the CIA thought he was going there as a tourist. If the CIA hadn't caught on to him, it should be dissolved and its budget used for something worthwhile."