Raymond Kimbrough, 43, was driving a county-issued, unmarked Chevrolet Tahoe south on U.S. Highway 77 on May 8 when he went through a red light and struck a westbound car driven by Allison Nagell, according to an affidavit. Nagell had a green light and died at the scene.

Kimbrough was responding to a request for assistance after a deputy was assaulted and injured during a traffic stop in southern Cleveland County. His emergency lights and siren were activated, the affidavit says.

Oklahoma law allows officers responding to emergencies to proceed through a red signal, but requires them to slow as needed to do so safely. Investigators alleged Kimbrough showed “a reckless disregard for the safety of others” by failing to slow sufficiently before entering the intersection.

The affidavit also says visibility was obstructed and that Kimbrough began accelerating toward the red light more than 100 feet before he could fully see westbound traffic approaching the intersection.

The charge was filed Oct. 1 in Cleveland County District Court. Negligent homicide with a motor vehicle is a misdemeanor punishable by a fine of $100 to $1,000 and up to one year in prison, court documents say. The charge is an allegation, and the case remains before the court.

Kimbrough was placed on administrative leave by the sheriff’s office’s previous administration and remains on leave while court proceedings continue. He is still employed by the department.