US Defense Secretary Lloyd Austin on Friday scrapped a plea agreement with 9/11 mastermind Khalid Sheikh Mohammed, just two days after the announcement of a deal that reportedly would have taken the death penalty off the table. 

Agreements with Mohammed and two alleged accomplices announced Wednesday had appeared to have moved their long-running cases toward resolution — but sparked anger among some relatives of those killed on September 11, 2001.

"I have determined that, in light of the significance of the decision to enter into pre-trial agreements with the accused... responsibility for such a decision should rest with me," Austin said in a memorandum addressed to Susan Escallier, who oversaw the case.

"I hereby withdraw from the three pre-trial agreements that you signed on July 31, 2024 in the above-referenced case," the memo said.

The cases against the 9/11 defendants have been bogged down in pre-trial maneuverings for years while the accused remained held at the Guantanamo Bay military base in Cuba.

The New York Times reported this week that Mohammed, Walid bin Attash and Mustafa al-Hawsawi had agreed to plead guilty to conspiracy in exchange for a life sentence, instead of facing a trial that could lead to their executions.

Much of the legal jousting surrounding the men's cases has focused on whether they could be tried fairly after having undergone methodical torture at the hands of the CIA in the years after 9/11.