Baltimore prosecutors announced on Wednesday the arrest of Dion Thompson in connection with the cold case homicide of off-duty Washington, D.C., police officer, Sgt. Tony Anthony Mason Jr., in 2017.
Thompson, who was 18 at the time of the incident, is accused of fatally shooting Sgt. Mason while he was sitting in a parked car with a woman he was dating. The woman was also shot but survived the attack.
