A Conyers man was shot and killed Wednesday evening on Interstate 20 after allegedly opening fire on an officer from the Covington Police Department and a trooper from Georgia State Patrol. According to CPD Public Information Officer Lt. Wendell Wagstaff, at approximately 9 p.m. a vehicle driven by 25-year-old Marvin Mercier, entered Newton County driving roughly 95 mph. When a Georgia State Patrol trooper attempted to initiate a traffic stop, Mercier refused to stop his vehicle, said Wagstaff.