US reaches plea deal with alleged 9/11 mastermind Khalid Sheikh Mohammed CNNBiden-Kamala Harris’ DOJ accepts plea deal from 9/11 terrorists, abolishes death penalty for mastermind Business TodayAccused Sept. 11 Plotters Agree to Plead Guilty at Guantánamo Bay The New York Times9/11 alleged mastermind Khalid Sheikh Mohammed and 2 others reach plea deal ABC News