US snow storm causes severe disruption

Fifteen people have been reported killed by a severe snow storm now moving into north-eastern US states after disrupting Christmas in the Midwest.

States in New England were due to see heavy snowfall, with up to 18 inches of snow expected in parts of Maine, the National Weather Service said.

Flights were grounded and road collisions reported as the storm moved across the middle of the US.

Ben Wright reports from Washington.