It's the latest development in the U.S. military's struggle to bring to justice the man charged with planning the Sept. 11 attacks on the United States.

The Biden administration has succeeded in temporarily blocking a plea deal for accused 9/11 mastermind Khalid Sheikh Mohammed that would spare him the risk of the death penalty for al-Qaida's Sept. 11,

The outgoing Biden administration has urged a federal appeals panel to block Khalid Sheikh Mohammed's guilty plea

Defense Secretary Lloyd Austin had sought to withdraw agreements with Khalid Sheikh Mohammed and two others charged in the Sept. 11, 2001, attacks.

The Biden administration asked a federal appeals court on Tuesday to block a plea agreement for accused 9/11 mastermind Khalid Sheikh Mohammed that would spare him the risk of the death penalty in one of the deadliest attacks ever on the United States.

A three-judge appeals panel will decide whether the plea deal Khalid Shaikh Mohammed reached to avoid a death-penalty trial remains valid.

The U.S. had filed an appeal to stop plea proceedings for alleged 9/11 architect Khalid Sheikh Mohammed and two others from moving forward Friday in the war court in Guantanamo Bay.

The Biden administration succeeded in halting a plea hearing for alleged 9/11 mastermind Khalid Sheikh Mohammed.

In a highly unusual legal move, the Justice Department has asked a federal appeals court to stop alleged 9/11 mastermind Khalid Sheikh Mohammad from pleading guilty this Friday at Guantánamo-- even though two U.

The Justice Department, on behalf of the Pentagon, on Tuesday asked an appeals court to block an effort to enforce plea deals reached with four accused conspirators of the Sept. 11, 2001, terrorist attacks.