09/28/2014 09:40 EDT | Updated 11/28/2014 05:59 EST

Marijuana grow-op discovered after fire on St-Denis Street

A downtown Montreal marijuana grow-op was discovered Saturday by firefighters during a routine inspection following a fire at the address next door.

Firefighters made the discovery after putting out a fire in a restaurant in the basement of 1693 St-Denis Street.

An inspection of neighbouring buildings to ensure the fire was fully out led firefighters to one third-floor apartment where they found 100 marijuana plants.

Montreal police were called in to investigate and their inquiries are ongoing.