Calgary police said two pedestrians died in a collision on the west end of the city Saturday evening.

The double fatal collision happened at 17 Avenue S.W. and 85 Street S.W. at around 7 p.m.

Emergency Medical Services said the victims were a man in his 50s and a woman in her 30s.

READ MORE: Man killed in crash east of Calgary on Highway 22X

EMS said a man in his 50s was also taken to Foothills Hospital in life-threatening condition. Police said the man was a driver of a vehicle involved in the crash and was extricated by the fire department before being taken to hospital.

A CPS spokesperson says the Alberta Serious Incident Response Team (ASIRT) will take over the investigation, but noted police were not pursuing the vehicle.

The Alberta Serious Incident Response Team is called in to investigate any police action that leaves another person seriously injured or dead, as well as serious and sensitive allegations of police misconduct.

The Calgary police traffic unit was on scene and all roads in the area were expected to be closed for several hours.