Four people were taken to trauma centres with life-threatening injuries on Tuesday morning following a gas explosion at a North York condo under construction.

Three other people suffered minor injuries and were also taken to hospital following the explosion.

Toronto Fire confirmed all seven people were working at the building, in the Esther Shiner Blvd. and Provost Dr. area.

Emergency services responded to a 9:15 a.m. gas explosion in the boiler room at the penthouse level, officials said.

“On arrival there was no fire here but crews were met with multiple patients and initiated requests for EMS units to attend,” Toronto Fire Services Paul O’Brien told reporters at the scene.

“We had patients exhibiting signs of burns but there was no fire on TFS arrival.”

Roads in the area were clos

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