Sitting on the front row of a war court on the US's Guantanamo Bay naval base in Cuba, Khalid Sheikh Mohammed, one of the world's most notorious defendants, appeared to listen intently.

The man accused of being the mastermind of the Sept. 11 attacks, Khalid Sheikh Mohammed, has agreed to let government prosecutors use portions of a 2007 confession that he says were obtained through ...

The accused mastermind of the 9/11 terror attacks will no longer plead guilty on Friday, after the US government objected.

If the Pentagon were ever to get courts’ leeway to withdraw a pledge not to seek the death penalty, the United States says, ...

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 ...

11, 2001 attacks, including alleged mastermind Khalid Sheikh Mohammed. The Justice Department filed its motion in the Washington, D.C. Circuit Court of Appeals Tuesday, asking the court to ...