The FBI recovered four medical-style gloves and a silver flashlight last year when they searched the Pennsylvania home of the parents of the man accused of killing four University of Idaho students.

A DNA mouth swab test was also recovered on Dec. 30 during a search of Bryan Kohberger’s parents’ home in Albrightsville, according to a search warrant obtained by NBC News on Tuesday.

The University of Idaho Murders

Investigators were authorized to obtain swabs from Kohberger, according to court records.

The return of the search warrant did not specify who the gloves belong to.

Other items collected included a white T-shirt, a Washington State Cougars sweatshirt, a pair of Nike shoes, a pair of socks, black shorts and black boxers, according to the search warrant.

Kohberger, 28, was arrested in Pennsylvania seven weeks after four students were stabbed to death in their beds at a home not far from the University of Idaho campus, an incident that shocked residents in little Moscow, Idaho. , stumped the police and sparked a nationwide manhunt. .

Kohberger has waived extradition to Idaho, where he is being held without bail. He has been charged with four counts of first degree murder and robbery, and if convicted, he could face the death penalty.

Murdered on November 13 were Ethan Chapin, 20, of Conway, Washington; Madison Mogen, 21, of Coeur d’Alene, Idaho; Xana Kernodle, 20, of Avondale, Ariz.; and Kaylee Goncalves, 21, of Rathdrum, Idaho.

Kohberger, who lived in an apartment in Pullman, Washington, seemed to have a keen interest in crime. He had been a Ph.D. criminal justice and criminology student at Washington State University, which is 10 miles from the University of Idaho.

An affidavit of probable cause from the Moscow police saying Investigators used video surveillance in the area to connect the quadruple homicide to a white Hyundai Elantra driven by Kohberger.

The affidavit also says that male DNA left on a knife sheath was used to link Kohberger to the murders. But the affidavit did not suggest a motive for the attack.

Kohberger has not formally entered a guilty plea, but has said through a former attorney that he believes he will be exonerated.