A woman was killed in a head-on collision south of Calgary on Highway 2 late Thursday night. A northbound SUV collided with a southbound car shortly before midnight about six kilometres south of High River, RCMP say.

The woman driving the car was declared dead at the scene, and the 32 year old man driving the SUV was taken to a Calgary hospital by STARS air ambulance.

The cause of the crash is being investigated.

Southbound traffic on Highway 2 was diverted to one of the northbound lanes for several hours, but all lanes have since been reopened.