A 23-year-old Walpole woman was air-lifted to a London hospital with life-threatening injuries after a head-on crash near Wallaceburg.

Emergency crews responded to the two-vehicle collision on Dufferin Avenue between Running Creek and Walnut Drive just before noon on Tuesday.

A 43-year-old Chatham man sustained non life-threatening injuries and was transported to Sydenham District Hospital.

Motorists are asked to avoid this area.  The road is expected to be closed until 6 p.m.

The crash remains under investigation.  Anyone with information is asked to contact Const. Mike Pearce of the Traffic Management Unit at 519-355-1092.