Murder In Moscow: Bryan Kohberger And The Missing Knife

At the time of the Newsweek report, one of the biggest missing pieces in the Bryan Kohberger case was the murder weapon itself. Investigators believed a large fixed-blade knife, likely a Ka-Bar or similar weapon, had been used to kill Kaylee Goncalves, Madison Mogen, Xana Kernodle and Ethan Chapin, largely because a tan leather Ka-Bar sheath had been found on the bed beside Mogen. DNA recovered from the sheath’s button snap had been linked to Kohberger, making the sheath one of the prosecution’s most important physical pieces of evidence. But police had not recovered the actual knife, and legal experts said that absence could have mattered greatly at trial. If prosecutors had found the weapon and tied it directly to Kohberger through DNA, purchase records, fingerprints or microscopic evidence, it could have provided another powerful link between him and the murders. Without it, the State would have had to prove its case through the sheath, DNA, cellphone records, surveillance footage and the white Hyundai Elantra rather than through the weapon itself.


The missing knife also created an obvious opening for the defense, which could have argued that possession of or contact with a sheath did not necessarily prove Kohberger had wielded the weapon that killed the four students. At the time, investigators had searched Kohberger’s apartment, his parents’ Pennsylvania home, his Hyundai and other locations without publicly announcing that they had located the murder weapon. Experts told Newsweek that recovering it could have helped answer questions about blood, trace evidence and whether the blade was actually consistent with the victims’ injuries, while its continued absence left a significant gap in the physical-evidence chain. Later disclosures strengthened the prosecution’s theory by showing that Kohberger had purchased a Ka-Bar knife, sheath and sharpener from Amazon months before the killings, but the knife itself remained missing. The article therefore focused on a simple but potentially crucial issue: prosecutors had a sheath they said carried Kohberger’s DNA, but they still did not have the object that had actually inflicted the wounds.



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