A three-alarm fire gutted the interior of a historic church in the Ville-Marie borough Saturday night. 

Dozens of firefighters were dispatched to Côté Pierre Vicaire Episcopal church on Fullum St., near Lariviere St. 

No one was injured, but extinguishing the fire proved difficult because of the abandoned building's size. 

The fire destroyed the floor of the building, and its interior was heavily damaged by smoke and water.

The structure of the building, however, was not impacted by the fire.

The Montreal Fire Department has yet to pinpoint the exact cause, but is working with the hypothesis that the fire was started by squatters.