Ali Saleh Kahlah al-Marri was arrested in December 2001 in Illinois by federal agents , detained as an " enemy combatant " , and jailed in 2009 for 15 years by the US Justice Department , as he admitted being an operative of Al-Qaeda , of which he attended its training camps from 1998 to 2001 . He reportedly met Khalid Shaikh Mohammed , the September 11 attacks mastermind
September 11 attacks
September 11 attacks
Ali Bin Fetais Al-Marri