Just after 12:30 a.m. Saturday Lambton OPP were on the scene of a single motor vehicle collision on Cameron Road, south of Courtright Line.
Their initial investigation has revealed that a large SUV had been travelling south on Cameron Road when it failed to negotiate a turn in the road.
The vehicle left the road and completely severed a hydro pole before coming to rest against a tree.
The collision was so severe that the body of the SUV separated from the chassis.
The driver, a 27-year-old male from Alvinston, was extricated by the Alvinston Fire Department suffering serious injuries.
A 55-year old male from Plympton and a 47-year-old female from Petrolia were both ejected from the vehicle .
The 55-year-ol male suffered life-threatening injuries and the 47-year old serious injuries.
The fourth passenger, a 22-year old male from Dawn Euphemia, also suffered serious injuries, but was able to walk away from the impact.
All four were transported to hospital by ambulance.
Hydro One was on the scene to secure the hydro pole and downed lines.
