One person was injured Sunday morning in a building fire in Calgary's southwest.

Fire crews were called to 17th Avenue and 37th Street S.W. at roughly 8:30 a.m. Sunday for reports of a building fire. 

On arrival, crews found heavy smoke and flames coming from the end unit of a single-storey commercial structure.

A second alarm was sounded as crews required additional help and equipment to deal with the blaze.

All occupants were accounted for but one person suffered minor burns and smoke inhalation, requiring transport by EMS.

The Calgary Fire Department is asking people to remember that when a fire is discovered, they should raise the alarm, immediately leave the building and call 911.

Temperatures hovering around –30 C did not have a direct impact on extinguishing the fire but did pose a problem for crews picking up the wet hose.

The cause of the fire has yet to be determined.