A US appeals court overturned a plea bargain for Khalid Sheikh Mohammed, the alleged planner of the devastating 9/11 attacks.
The controversial deal would have given him life in prison in exchange for avoiding a death penalty trial; the court disagreed.
This decision follows years of legal battles, including debates about whether evidence obtained through torture should be allowed.
The families of victims were divided, with some wanting a trial for full justice, others wanting closure through the plea deal.
