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US Secretary of Navy: 'Horrific attack on Navy family'

16 September 2013 Last updated at 21:47 BST

The US Secretary of the Navy has described the shooting at a US naval facility as a "horrific attack".

At least 12 people have been killed and four wounded in the attack at the Washington Navy Yard.

Ray Mabus said that he had visited some of the injured in hospital.

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