The defense lawyers for Idaho murders suspect Bryan Kohberger are optimistic that newly uncovered DNA evidence will help prove his innocence.

In the bed of one of the stabbing victims, police said they also found what many regard as the case's key piece of evidence: a leather sheath for a fixed-blade knife.

University of Idaho student murder suspect Bryan Kohberger's defense is arguing that two blood samples from unidentified males at the crime scene could clear him.

Prosecutors have not challenged these claims, suggesting that the evidence could play a major role in Kohberger's defense.