Tip leads to arrest in cold case killing of off-duty DC police officer in Baltimore

BALTIMORE (AP) — Baltimore prosecutors have announced the arrest of a man in the cold case homicide of an off-duty Washington, D.C., police officer in 2017. Police say Sgt. Tony Anthony Mason Jr., was shot to death while sitting in a parked car with a woman he had been dating. She was also shot but survived her injuries. The case sat unsolved for five years until detectives received a tip in early 2023. Prosecutors said Wednesday that they tip led to charges against 24-year-old Dion Thompson. His charging documents say Thompson shot up the car because he didn’t recognize its occupants.