Three men accused of plotting the 9/11 attacks, including alleged mastermind Khalid Sheikh Mohammed, have reached plea agreements in the military commissions process, officials said Wednesday.

Mohammed, Walid Muhammad Salih Mubarak Bin ‘Attash and Mustafa Ahmed Adam al Hawsawi are scheduled to appear at a hearing at Guantánamo Bay, Cuba, next week, according to the Office of Military Commissions.