The alleged mastermind behind the September 11 terror attacks will go on military trial in 2028, a judge has ruled.
Khalid Sheikh Mohammed has been held at Guantanamo Bay, the US detention camp in Cuba, since 2006.
The 61-year-old, of Pakistan, is accused of orchestrating the 9/11 atrocities almost 25 years ago, which saw al-Qaeda hijackers fly planes into the World Trade Centre's two towers in New York and the Pentagon in Washington.
Another plane crashed in a field in Pennsylvania after passengers fought to regain control of the aircraft, which was targeting another government building in DC.