Waterloo Regional Police and University of Waterloo Police are investigating an overnight incident that sent a man to hospital with life-threatening injuries.

Police say around 3 a.m. EMS responded to a parking lot at the University of Waterloo where several males were present, including the victim, who had severe head injuries.

Police say they are still trying to determine whether the incident involved criminal conduct or misadventure.

Anyone with information is asked to call Waterloo Regional Police at 519-653-7700 ext. 6353 or Crimestoppers at 1-800-222-TIPS.