Four people were taken to hospital in Calgary early Sunday morning after their car drove into a ditch, hit a guardrail, then an embankment “causing the vehicle to become airborne,” RCMP said.
The crash happened on Horse Creek Road, about three kilometres north of Highway 1A just before 4 a.m.
RCMP said two of the four people in the car were ejected.
Police said a female driver and three passengers were taken to Foothills hospital, where one remained in critical condition at 12:30 p.m. RCMP said the others suffered minor injuries.
“Alcohol and speed are believed to be contributing factors,” RCMP said in a release.
Paramedics said the patients were in the early 20s. EMS said STARS Air Ambulance responded and took the seriously injured patient, a 20-year-old man, to hospital.
RCMP are investigating the circumstances that led to the rollover.
A Global News request for more information from RCMP was not immediately answered Sunday morning.