At least 38 people have died due to a massive winter storm and freezing winds that continue to hit the United States and Canada.

Officials say 34 people died across the US, with the worst-hit area being the city of Buffalo, in New York.

Four people were killed in Canada when a bus rolled over on an icy road near the town of Merritt in British Columbia.

The storm has wreaked havoc for days leaving millions of people without power and leading to cancellation of thousands of flights in the United States.