An analysis by the Bureau of Alcohol, Tobacco, Firearms and Explosives could not definitively link a bullet fragment from Charlie Kirk’s autopsy to the rifle found at the scene, and the Federal Bureau of Investigation is conducting further testing.

Defense attorneys for the accused shooter, Tyler Robinson, are seeking a delay in proceedings to review the inconclusive forensic results and other evidence.

The ATF report has not been publicly released, but available details suggest the findings were not definitive.

Robinson faces aggravated murder charges, and prosecutors are pursuing the death penalty while citing DNA evidence linking him to the weapon, The Guardian has reported.

His defense argues that mixed DNA evidence and uncertain ballistics analysis require more time and careful evaluation before trial.