Bryan Kohberger appeared expressionless as a judge asked if he murdered four Idaho college students in their off-campus home, answering “yes” to each name called out in the courtroom Wednesday.

More details could emerge when Kohberger returns to court for his sentence on July 23. Some answers could also be in the hundreds of documents filed by prosecutors and defense lawyers that have been under seal and out of public view starting in 2022.

Bryan Kohberger pleaded guilty to the murders of four University of Idaho students as part of a plea deal to avoid the death penalty more than two years after the slayings shocked the nation and touched off a coast-to-coast manhunt.