'' United States v. Khalid Sheikh Mohammed , et al. '' is the trial of five alleged Al-Qaeda members for aiding the September 11 , 2001 attacks . Charges were announced by Brigadier General Thomas W. Hartmann on February 11 , 2008 at a press conference at the Pentagon . The men charged are Khalid Sheikh Mohammed , Walid bin Attash , Ramzi bin al-Shibh , Ammar al-Baluchi , and Mustafa Ahmad al Hawsawi
September 11 , 2001 attacks
September 11 attacks
United States v. Khalid Sheikh Mohammed