A federal cabinet minister says Ottawa is working with Toronto and Ontario officials to help ease the strain on Toronto’s homeless shelter system as temperatures plunge.

Federal Public Safety and Emergency Preparedness Minister Ralph Goodale says they are trying to find the most effective solution as quickly as possible.

Environment Canada has issued a new extreme cold warning advisory for the city, predicting overnight temperatures as low as minus-25 Celsius with wind chills that could feel like minus-40.

Toronto Mayor John Tory has requested that a federal armoury be opened up as a shelter for the homeless.