Ontario Provincial Police are investigating a serious rollover crash that occurred early Tuesday on Highway 403 just outside Brantford. The incident happened around 12:35 a.m., when a vehicle left the roadway, became airborne, and flipped, eventually coming to rest on its roof east of Garden Avenue.

Inside the vehicle were four occupants: a 21-year-old male driver, a 19-year-old female, a 20-year-old female, and a 20-year-old male. All were transported to hospital with non-life-threatening injuries.

Police do not believe alcohol played a role in the crash. Investigators are asking anyone who witnessed the incident or has dashcam footage from the area to contact the OPP at 1-888-310-1122.