An arrest warrant has been issued for suspects in the deaths of a U.S. Army officer and his interpreter at an Iraqi police station in Mosul last month.

First Lt. William Emmert, 36, with the 269th Military Police Company, 117th Military Police Battalion, was killed when a man wearing an Iraqi police uniform opened fire in a room at the station. Emmert’s interpreter was also killed in the attack, which highlighted worries about the infiltration of insurgents into Iraqi forces.

Three U.S. soldiers and another interpreter were injured in the Feb. 23 attack.

Staff Sgt. Thomas Hosfelt, one of the injured, later testified about the attack before two Iraqi investigative judges, according to a news release issued by Multi-National Division — North. The testimony was used to issue the warrant for suspects in the attack, who are still at large.

Hosfelt, a military policeman with the 302nd Military Police Company, said a man opened fire through a cracked door into a room at the Iraqi police headquarters building where the soldiers and interpreters were gathering.

Despite his injuries, Hosfelt chased the gunman and fired at him. He thought he struck the man, who was helped by an accomplice to get away.

Iraqi police issued an order to look out for the suspects, and command posts in east Mosul were ordered to search all vehicles in the area.

The warrant was issued March 8 for the suspects in the shooting.

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