(KENTUCKY) — The ballistics report from the Kentucky State Police could not determine that the boyfriend of Breonna Taylor shot one of the officers who responded to the scene.

ABC News has obtained a portion of the Kentucky State Police’s ballistic report indicating that the bullet that struck Sergeant John Mattingly “was neither identified nor eliminated as having been fired” from Kenneth Walker’s gun “due to the limited markings of comparative value.”

Taylor, a 26-year-old Black woman, was shot to death in her own apartment in March as police were executing a “no-knock” warrant.

Kentucky Attorney General Daniel Cameron claimed the officers opened fire when Walker fired at them first with a licensed gun, hitting Mattingly in the leg, when the officers forced open the front door in the early morning hours.

Cameron added an FBI ballistics analysis determined that the one fatal shot came from Cosgrove’s 40-caliber weapon.

In an interview with ABC News, Steve Romines, one of the attorneys for Kenneth Walker, said “the Kentucky State Police’s own ballistics’ report could not determine that Kenny’s shot is who hit Officer Mattingly.”