Face of Nation : A police spokesperson told Global News emergency crews were called to the area of Dafoe Street and Zephyr Road, near Concession 3 Road, just before 6:30 p.m. on Tuesday. The spokesperson said two of the people were seriously injured. A spokesperson for Ornge air ambulance told Global News a crew from Toronto was sent to transport a patient to Sunnybrook Health Sciences Centre. Police said there was information the explosion might be related to a furnace issue, but investigators weren’t able to definitively confirm the cause as of Tuesday evening.