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 doubled down on its unusual court battle to derail a plea deal that the government itself had reached with accused 9/11 mastermind Khalid Sheikh Mohammed.

In its latest effort to halt the pleas, the Pentagon settled on a legal maneuver in which the Justice Department asked the appellate court to order the court at Guantánamo to cancel the pleas. It has also asked the appeals court to delay the upcoming plea hearings if the court wants more time to deliberate over the cancellation request.

The Biden administration successfully delayed a plea deal for Khalid Sheikh Mohammed, accused 9/11 mastermind, that would avoid the death penalty. A federal appeals panel temporarily blocked the 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 succeeded in halting a plea hearing for alleged 9/11 mastermind Khalid Sheikh Mohammed.

The Biden administration has temporarily blocked a plea deal for Khalid Sheikh Mohammed, the alleged planner of the 9/11 attacks. The government requested this pause to avert the death penalty waiver for him.

The Department of Defense filed an emergency request with a federal appeals court Tuesday in an effort to stop plea deals given to three accused terrorists involved in the Sept. 11, 2001, terrorist attacks.

An appeals court on Thursday temporarily blocked a plea deal for three accused 9/11 plotters in a win for the Justice Department and Pentagon, which had requested this week that the court block the agreements ahead of a Friday hearing.