With a series of “yes” replies to a judge, a man accused of killing four Idaho college students pleaded guilty in exchange for life in prison and no death penalty. But left untold so far: What motivated Bryan Kohberger to commit the middle-of-the-night knife attacks and why those victims?

Idaho murders suspect Bryan Kohberger pleaded guilty Wednesday to killing four college students in 2022. Kohberger, a 30-year-old former PhD student in criminology, was set for death penalty after being charged with four counts of first-degree murder and one count of burglary.