Two weeks after NYPD Detective Brian Simonsen died by friendly fire, investigators have been unable to determine which officer fired the shot that killed him, an NYPD spokesman told ABC News.
The round that struck Simonsen was recovered but "the ballistics examination was inconclusive," meaning "we are not able to determine which firearm it came from," the spokesman said.
Body camera and surveillance video showed several officers in position to have fired the fatal shot but the images did not show which one did, a police source added.
Simonsen, 42, an 18-year veteran, was shot and killed on Feb. 12 while responding to an armed robbery at a Queens T-Mobile store.
Simonsen's partner, Sgt. Matt Gorman, and two officers who set foot in the store quickly retreated when police said the suspect, Christopher Ransom, pointed an imitation handgun at them.
In a chaotic scene that unfolded within seconds, seven officers shot 42 rounds, authorities said.
Simonsen, who did not have a bulletproof vest on, was fatally hit once in the chest, authorities said.