UPDATE: Highway 11 NB lanes have reopened after being closed earlier following a serious fatal collision that occurred between Luigi and North Kahshe Lake Roads.
A northbound vehicle lost control and rolled into the ditch.
Two injured occupants were flown by Ornge air ambulance to a Toronto area trauma centre with serious injuries.
A third person was transported to an area hospital with non-life threatening injuries.
The fourth person died at the scene of the crash.
OPP continue to investigate at the scene. (Photo via Muskoka 411)
