A 26-year-old Calgary man died as the result of his injuries from a serious rollover on Highway 1A west of the city early Sunday morning.

His 22-year-old female passenger was also sent to hospital with serious injuries.

Cochrane RCMP say the 2010 Nissan Sentra they were driving eastbound between Twelve Mile Coulee Road and Bearspaw Road around 4:15 a.m. MT left the highway and rolled through the centre median, ending up in the westbound lanes.

No names have been released, and the collision is still under investigation.

Anyone with information is asked to contact Cochrane RCMP at 403-851-8000.