The letter, obtained by USA TODAY, said Khalid Sheikh Mohammed and two of his top lieutenants agreed to plead guilty "in exchange for the removal of the death penalty as a possible punishment." ...

Khalid Sheikh Mohammed, accused as the main plotter in al-Qaeda’s Sept. 11, 2001, attacks on the United States, has agreed to plead guilty, the Defense Department said Wednesday, pointing to a ...

A plea hearing to enable alleged 9/11 terror attack mastermind Khalid Sheikh Mohammed to avoid the death penalty will not go forward Friday, after the D.C. Circuit ...

The trial of the five 9/11 conspirators had been stuck in legal delays. Three of the five 9/11 defendants at Guantanamo Bay-- including alleged mastermind Khalid Sheikh Mohammed-- have reached a ...

After spending almost two decades in the U.S. military prison at Guantánamo Bay, Cuba, the alleged mastermind of the 9/11 terror attacks, Khalid Shaikh Mohammed, and ...