The three-alarm fire happened at an apartment building on Chemin de la Côte-Saint-Luc in Hampstead, Que., an on-island suburb of Montreal. (Stéphane Grégoire/Radio-Canada - image credit)A father and his son are in critical condition after a fire broke out in an apartment building in Hampstead, Que., an on-island suburb of Montreal. Emergency services were alerted about the three-alarm fire at an apartment building on Chemin de la Côte-Saint-Luc at 10:10 p.m. Sunday night. A 36-year-old man and his five-year-old son were found unconscious at the scene and taken to hospital in critical condition. Police say they believe the cause was accidental and are investigating.