Ice from Monday's storm still clings to branches as Ken Finnegan loads his truck with firewood Thursday, Dec. 26, 2013, in Litchfield, Maine
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US gripped by freezing temperatures

Bitterly cold weather has gripped several states in the US and temperatures are expected to plummet further.

Homeless shelters in Maine are struggling to cope with the extra demand for places, while drivers in North Dakota have been advised to stay off the roads unless their journey is absolutely necessary.

Wendy Urquhart reports.

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