BOISE, Idaho (AP) — The lead prosecutor tasked with finding justice for four University of Idaho students killed in a grisly quadruple stabbing more than two years ago laid out his key evidence Wednesday at a court hearing for Bryan Kohberger, who agreed to plead guilty earlier this week to avoid the death penalty.

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.

Childhood friends of Bryan Kohberger, who pleaded guilty Wednesday to stabbing four University of Idaho students to death in November 2022, have tracked his murder case from afar and said they felt shocked the former Pennsylvania resident suddenly agreed to a plea deal to spare his life.