Three adults and one teenager have died, and another child is in hospital with serious injuries, following a collision Sunday night in the northwest end of London, Ont., police say.

Emergency crews were called to the scene at Hyde Park Road at South Carriage Road at about 8:40 p.m.

A woman was pronounced dead at the scene. Another woman, a man and a teenager died in hospital. One child remains in hospital with serious injuries.  

Police say a 20-year-old male driver was arrested at