Fire crews battled a two-alarm blaze today at a former church near Dufferin Street and Armstrong Avenue. 

Seven fire trucks and around 100 personnel responded shortly before 3 p.m, ET after fire broke out in the west-end neighbourhood. 

The roof and at least one wall of the building collapsed as crews worked into the evening to douse the fire. 

"Churches tend to go up pretty quickly," Platoon Chief Eric Cotter of Toronto Fire Service told CBC News. "They're usually not sprinklered and have timber construction …perfect for a fire. Once they take off they tend to be very rapid." 

There are no reports of injuries. Firefighters believe the church — which has been for sale, to be turned into lofts — was empty at the time though there are concerns it might have been used by squatters.

The building was under construction but has gone unused for at least five years according to area residents. 

The cause of the fire is under investigation. 

With files from CBC's Amanda Margison