According to documents filed this month, the “bullet jacket fragment” recovered during Kirk’s autopsy was too damaged for a conclusive comparison with the .30-06 hunting rifle tied to Robinson.
The analysis was conducted by the Bureau of Alcohol, Tobacco, Firearms, and Explosives, though the full report has not been made public and has only been referenced in court filings.
The findings became a focal point after claims circulated online suggesting the fragment did not match the rifle, fueling speculation about the circumstances surrounding the September 10, 2025, shooting at Utah Valley University in Orem, Utah.
Court documents, however, describe the results as inconclusive rather than contradictory. “The result of the comparison was inconclusive,” the filing states, indicating that the fragment lacked sufficient detail for a definitive match.
Utah County Attorney’s Office prosecutor Christopher Ballard declined to comment directly on specific forensic results but explained the meaning of such findings.
“When the results of a bullet fragment analysis come back as inconclusive, that means only that the fragment did not contain enough detail for the examiner to determine whether the characteristics on the fragment were consistent with having been fired by a particular firearm,” Ballard said.
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