A man is dead following a single vehicle crash in the west-end of Peterborough early Sunday. Peterborough police say around 4:15 a.m. emergency crews responded to a report of a vehicle in the ditch on Sherbrooke Street West just east of Hwy. 7. Officers located the vehicle and began life-saving measures on the driver. However, he was pronounced dead at the scene. The name of the 25-year-old Cavan-Monaghan Township man was not released. The cause of the crash remains under investigation. The roadway was closed until around noon as police investigated.