Kohberger, a 28-year-old criminology Ph.D. student at Washington State University during the attack, is accused of ambushing four University of Idaho students in the middle of the night on Nov. 13, 2022. The schools are about 7 miles apart.
The attack killed 21-year-olds Kaylee Goncalves and Madison Mogen, along with their 20-year-old housemate Xana Kernodle and her boyfriend, Ethan Chapin, also 20.
Excerpt from the warrant returns unsealed Tuesday. (Pennsylvania Courts)
According to court documents, police found a Ka-Bar knife sheath near Mogen's body and recovered a DNA sample from the snap.
That DNA was a familial match for another sample taken from the trash at the Kohberger family residence in Albrightsville, Pennsylvania.
Kohberger is being held at the Latah County Jail in Moscow, Idaho, without bail.
Excerpt of the warrant returns. (PA Courts)
Madison Mogen, top left, smiles on the shoulders of her best friend, Kaylee Goncalves, as they pose with Ethan Chapin, Xana Kernodle, and two other housemates in Goncalves' final Instagram post, shared the day before the four students were stabbed to death. (@kayleegoncalves/Instagram)
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He faces four counts of first-degree murder and a felony burglary charge.
He's due back in court on June 26 for a preliminary hearing, where his defense plans to challenge the evidence against him.
A view of the sliding glass door in the rear of the home 1122 King Road, Moscow, Idaho on November 14, 2022. A witness said a masked intruder with "bushy eyebrows" used it to exit the residence after he allegedly killed four students of the University of Idaho inside the home. (Derek Shook for Fox News Digital)
Bryan Kohberger arrives at Monroe County Courthouse in Pennsylvania in advance of highly anticipated extradition hearing. He's charged with the murders of four University of Idaho students. (The Image Direct for Fox News Digital)
Authorities have not publicly established a motive for the attack but allege that Kohberger stalked the victims' house at least a dozen times before the slayings and returned once more to the scene hours later.