Two men are dead after a head-on collision between a van and a car on a highway south of Barrie.

It happened around 1 a.m. on Highway 89 near Ninth Line in New Tecumseth Township, Ontario Provincial police said.

Police said both male drivers, aged 64 and 24, were killed in the crash. There were no passengers in either vehicle.

It’s not yet clear what caused the collision.

Roads around the scene are expected to remain closed until noon.