Relatives of the nearly 3,000 victims of the 9/11 attacks have long hoped a trial would bring closure and perhaps resolve unanswered questions.

Hours before dawn on March 1, 2003, the United States scored its most thrilling victory yet against the plotters of the September 11 attacks – the capture of a dishevelled Khalid Sheikh Mohammed, hauled away by intelligence agents from a hideout in Rawalpindi, Pakistan.
https://www.aljazeera.com/news/2022/9/9/tremendous-blemish-no-trial-decades-after-sept-11-attacks