Firefighters from five communities, including from as far as Mirabel, were called to help fight a general alarm fire in Sainte-Thérèse Monday evening.
Two people were injured, including a woman who remains in critical condition, after fire swept through a two-story commercial-residential building on rue Blainville Ouest.
Although the cause of the fire is unknown firefighters believe it began in a ground-floor restaurant and spread to apartments upstairs.