ROUGH CUT (NO REPORTER NARRATION) Gwinnett County Police Chief Butch Ayers says a manhunt is underway for a man suspected of killing a police officer who was responding to a call about a suspicious vehicle.

Authorities are searching for 18-year-old Tafahree Maynard in the shooting death of Gwinnett County office Antwan Toney on Saturday.

Police say a second suspect, 19-year-old Isaiah Pretlow, was arrested and charged with aggravated assault.