Bryan Kohberger has admitted guilt in the slayings of four students at the University of Idaho. But the public still doesn't know what motivated Kohberger to commit the knife attacks and how he chose his victims in 2022.

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.

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.