Expert witnesses for the accused killer will not challenge scientific finding that the suspect’s DNA was located on a knife sheath discovered at the crime scene, according to prosecution.

Bryan Kohberger's lawyer believes he could be unfairly convicted of the Idaho murders due to his "piercing stare," which the attorney argued is a behavioral symptom of autism spectrum disorder.

Prosecutors say the man charged in the stabbing deaths of four University of Idaho students​ bought a knife and sheath online in the months before the killings.