The suspect, who shot and killed a Prince George's County police officer, used the sergeant's gun in a shootout with police.
The forensic services division completed its analysis and filed its report Tuesday into the homicide of Mujahid Ramzziddin, who was posthumously promoted from corporal to sergeant.
Sgt. Ramzziddin was killed by Glenn Tyndell on the morning of Feb. 21 at his home in Brandywine.
According to the report, Tyndell stole Sgt. Ramzziddin's gun and fled the home after killing the officer with a shotgun, which was found at the home the next day.
Tyndell lead authorities on a chase before he was shot and killed during a shootout with police. Tyndell was found holding Sgt. Ramzziddin's gun, which he used twice in the shootout.
Sgt. Ramzziddin was protecting Tyndell's estranged wife at the time of his murder. Tynell had three open warrants for assault.