Three men were killed and two other people were seriously injured in a car crash.
A black Toyota and a white Peugeot collided on the A1077 near South Ferriby, North Lincolnshire, at about 11:00 GMT on Sunday.
Three men inside the Toyota died at the scene. A man and woman in the Peugeot remain in hospital, officers said.
Police have appealed for any witnesses to come forward as they attempt to trace the men's next-of-kin.