Bryan Kohberger’s defense team was preparing to argue at his trial that autopsy results for two of the Idaho murder victims suggested two people committed the sinister killings. Kohberger’s defense team hired forensic criminologist Dr. Brent Tarvey to help defend him when the case was still expected to go to trial. While Tarvey’s outline is under seal, sections of his findings were included in a separate court filing obtained by People. This evidence and context begin to suggest the existence of a second attacker,” Tarvey wrote in his report, according to the outlet. Related: Idaho Prosecutor Reveals How Often Bryan Kohberger Was Near Victims' Home University of Idaho murders lead prosecutor Bill Thompson is sharing new details about the case after convicted killer Bryan Kohberger was sentenced to life in prison.