A 59-year-old woman has died and two others were taken to hospital after being exposed to carbon monoxide in a Laval, Que. residence.
Police spokesperson Stéphanie Beschara said that Laval authorities were dispatched to a small apartment building at 2:20 p.m. on Friday in the Laval-des-Rapides region.
Two people were taken to hospital and are in stable condition condition. Police could not confirm whether the 59-year-old victim died at the residence or at the hospital.
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Authorities say they are unsure how the three people were exposed to the toxic gas.
The case was deemed not criminal and was transferred to the Quebec coroner to investigate.