The autopsies for the four University of Idaho victims have revealed they were killed by a “bigger knife” and had “extensive” injuries from “multiple” stab wounds. Investigators continue to search for a suspect and murder weapon. NBC’s Gadi Schwartz reports for TODAY and criminologist Casey Jordan shares insight into the investigation. » Subscribe to TODAY: http://on.today.com/SubscribeToTODAY » Watch the latest from TODAY: http://bit.ly/LatestTODAY About: TODAY brings you the latest headlines and expert tips on money, health and parenting. We wake up every morning to give you and your family all you need to start your day. If it matters to you, it matters to us. We are in the people business. Subscribe to our channel for exclusive TODAY archival footage & our original web series. Connect with TODAY Online! Visit TODAY's Website: http://on.today.com/ReadTODAY Find TODAY on Facebook: http://on.today.com/LikeTODAY Follow TODAY on Twitter: http://on.today.com/FollowTODAY Follow TODAY on Instagram: http://on.today.com/InstaTODAY » Stream TODAY All Day: https://www.today.com/allday About: TODAY All Day is a 24/7 streaming channel bringing you the top stories in news and pop culture, celebrity interviews, cooking, and more. All in one place. #idaho #university #homicide