Khalid Sheikh Mohammed, accused as the mastermind of al-Qaida’s Sept. 11, 2001, attacks on the United States, has agreed to plead guilty, the Defense Department said Wednesday.

9/11 family that watched Khalid Sheik Mohammad trial in 2009 at Guantanamo Bay hopes for verdict Retired Air Force Lt. Col. Don Arias' brother died on 9/11 while helping people escape the south tower ...

The mastermind behind the truly devastating 9/11 attacks on the US in 2001, Khalid Sheikh Mohammed, has had his plea deal thrown out, which means the death penalty could be back on the table.

A US court has temporarily blocked Khalid Sheikh Mohammed, the suspected mastermind of 9/11, from making a guilty plea deal, which would have allowed him to avoid the death penalty, following a ...

WASHINGTON (AP) — Khalid Sheikh Mohammed, accused as the mastermind of al-Qaida’s Sept. 11, 2001, attacks on the United States, has agreed to plead guilty, the Defense Department said Wednesday.