9/11 Perpetrators: Where Are They Now?

Sept. 11, 2010— -- While 19 hijackers were among the nearly 3,000 people who died in the Sept. 11, 2001 attacks, many of the men said to be responsible for the worst terrorist incident in U.S. history were nowhere near Washington or New York that morning. Some of the prime actors have been captured or killed, while others remain at large nine years later.

Khalid Sheikh Mohammed The admitted mastermind of 9/11 has said that he is responsible "from A to Z" for the attacks. Currently held at Guantanamo Bay, he has said that he wants to plead guilty and looks forward to becoming a martyr. He was captured in his home country of Pakistan in 2003 and was waterboarded while in U.S. custody. He has professed involvement in dozens of terror plots, has been charged with war crimes and faces the death penalty. Mohammed and four other defendants are set to be tried in a U.S. court once a venue has been picked. New York authorities have objected to plans to try the defendants at a courthouse in lower Manhattan near Ground Zero.