Despite Kohberger's guilty plea in the Idaho murders, investigators still don't know his motive, who he targeted or where the murder weapon is after he covered his tracks.

A judge is expected to order Bryan Kohberger to serve four life sentences without parole this week for the brutal stabbing deaths of four University of Idaho students nearly three years ago.

In an interview, the lead prosecutor, Bill Thompson, decried how some of the wild speculations surrounding the case made life “hell” for innocent people.