Ottawa police are investigating after a single-vehicle crash in south Ottawa left a man with life-threatening injuries Sunday morning.

Paramedics said they were called to the area of 4th Line Road and Dilworth Road around 3:50 a.m., where a 38-year-old man had been injured.

He was the only person inside the vehicle and suffered severe head injuries, according to paramedics.

He was taken to hospital in life-threatening condition.