Ontario Provincial Police say a man has died following a single-vehicle crash near Cornwall, Ont. on Thursday. In a news release on Friday, OPP said officers responded to reports of vehicle leaving the road and travelling into a ditch while driving westbound on Highway 401 near Moulinette Road around 2 p.m. Police say the vehicle’s lone occupant, a 78-year-old man from Brockville, was taken to the hospital, where he was pronounced dead. According to police, the initial investigation indicates the driver may have experienced a medical emergency, which caused the collision. A postmortem examination has been ordered. Anyone who witnessed the crash or who may have video footage of the incident is asked to call Stormont, Dundas and Glengarry OPP at 1-888-310-1122.