Bryan Kohberger is expected to take a plea deal in the alleged murders of Madison Mogen, 21, Kaylee Goncalves, 21, Xana Kernodle, 20, and Ethan Chapin, 20, who were University of Idaho students

Bryan Kohberger admitted to murdering Xana Kernodle, Ethan Chapin, Madison Mogen and Kaylee Goncalves, but he still hasn't said why he did it.

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.