One person is dead following a two-vehicle collision in Caledon Tuesday afternoon.

Ontario Provincial Police said they responded to a serious crash on Highway 9 near The Gore Road just before 6 p.m.

One person was pronounced dead at the scene, police said. No one else was injured in the incident.

The cause of the collision is unknown.

Highway 9 was closed between The Gore Road and Centreville Creek Road for the investigation.