HALIBURTON, Ont. - Provincial police say a 73-year-old man is in life threatening condition after a pickup truck and tractor collided near Haliburton, Ont., on Tuesday morning.

OPP say the man was backing out of a driveway in his small tractor when he was struck by a passing pickup trick.

The 73-year-old man was airlifted to a Toronto-area hospital.

Police did not say whether the driver of the pickup truck suffered from any injuries.

Investigators are on scene investigating the collision.