The Perth County OPP is investigating a serious crash on Road 150, south of Line 39.
At approximately 5:20pm yesterday, police responded to a single vehicle rollover collision.
A grey Ford F-150 pickup travelling southbound on Road 150 left the gravel roadway and entered the east ditch.
Both occupants were ejected from the vehicle.
William Leppington, age 23, from the Municipality of West Perth was transported via air ambulance to Victoria Hospital in London with life threatening injuries.
Sherry Garrett, age 28, from Granton was transported to Victoria Hospital in London with non-life threatening injuries.
Members from the OPP Technical Traffic Collision Investigation (TTCI) team attended the scene. The cause of the crash is under investigation.
The roadway is now open.
Anyone with information should contact the Perth County OPP at 1-888-310-1122 or Crime Stoppers at 1-800-222-TIPS (8477).