Calgary fire crews were called out to a two alarm fire at a condo complex on Southhampton Drive in the city’s southwest on Thursday morning.

The fire started at about 10:45 a.m. at the Prairie Meadows complex in the community of Southwood.

Smoke could be seen pouring out of the upper floor of one of the units when crews arrived.

Firefighters were faced with serious structural issues when they tried to search and attack the fire from the inside so they had to change tactics and mount an aggressive fight from outside.

The fire vented through the roof so crews doused it from above using aerial equipment.

Residents were evacuated from eight units and officials say one unit has significant damage.

Two dogs was rescued from the evacuated units and no injuries were reported.

Fire investigators are looking into the cause.