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

Kaylee Goncalves' 18-year-old sister, Aubrie Goncalves, is speaking out after her suspected killer, Bryan Kohberger, has reportedly accepted a plea deal.

Bryan Kohberger's motive for stabbing to death four students and any connection he had to them remain unknown.