It was Bryan Kohberger’s very own DNA that eventually led to his arrest, according to the probable cause affidavit. Per a review by The Independent, Kohberger’s DNA was on a knife sheath found in one of the rooms where the victims’ bodies were discovered. Moscow Police Officer Brett Payne, who wrote the affidavit, detailed what it looked like and how their investigation pointed to Kohberger being the primary suspect.
“The sheath was later processed and had ‘Ka-Bar,’ ‘USMC’ and the United States Marine Corps eagle globe and anchor insignia stamped on the outside of it,” Payne wrote. “The Idaho state lab later located a single source of male DNA (suspect Profile) left on the button snap of the knife sheath.”
Read Related Also: Brazen 'Burlington bandit' hauls $5K of stolen loot from Florida store
The New York Times also noted that investigators cross-referenced the DNA to samples collected from the trash at Kohberger’s family’s residence in Pennsylvania. “At least 99.9998% of the male population would be expected to be excluded from the possibility of being the suspect’s biological father,” the document read (via CBS News).
