A suspicious fire broke out Saturday at a daycare centre.


Calgary firefighters arrived at the scene in the 6800 block of 7 Street S.W. to see flames and thick black smoke coming from a second storey window.


The fire department believes the duplex unit was recently converted to a daycare and was vacant.


The fire was contained to the second storey with smoke damage throughout the building.

"While firefighters were attacking the fire, they noticed evidence that made them believe the fire is suspicious in nature," the fire department said in a release.

No injuries were reported.