FRYEBURG – Police said the driver of a car that hit a busload of New Hampshire campers during the weekend in Maine might have dozed off at the wheel.

Hans Vonsicard, 45, of Graham, Wash., is in critical condition after Sunday’s crash on Route 302 in Fryeburg.

The campers were returning to Camp Robindel in Moultonborough, N.H., from a camp in Maine. Camp Robindel owner Nat Greenfield said none of the girls had any serious injuries.