Officers arriving on the scene near Western Canada High School found one man already dead and two others suffering from gunshot wounds.
UPDATE: The victim in a shooting in Calgary's Mission district has been identified as Trevor James Munro, 22, of Surrey, B.C., the Calgary Police Service said in a news release. The two others who were injured in the shooting are from B.C.'s Lower Mainland.
The pair, a man and a woman, were taken to hospital in unknown condition.
Calgary homicide detectives have taken over the case.
Staff Sgt. Gary MacAuley says the canine unit and tactical unit have searched the area and found nothing, as has the police helicopter.
Several witness have said they heard multiple gunshots.
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