Toronto fire crews are investigating a possible carbon monoxide leak at a midtown building that left one woman dead Tuesday morning.

Emergency services were called to 144 Wychwood Avenue in the St. Clair Avenue West and Bathurst Street area at approximately 9:13 a.m. after reports of a suspected leak. Toronto Fire says investigators are still working to determine the source.

Toronto police confirmed to CityNews that the call was initially for a medical emergency. Paramedics attended the scene, but the woman was pronounced deceased.

Police say Toronto Fire officials advised that there was a smell of natural gas inside the building and requested that Enbridge Gas attend and check the levels.

Authorities stressed that the cause of death has not yet been specified.

“[That] would have to b

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