Police cars at the Navy Yard complex in central Washington
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Twelve shot by gunman at naval facility

17 September 2013 Last updated at 16:20 BST

A gunman who died after killing 12 people at a naval installation in Washington DC has been identified as a former Navy serviceman.

Aaron Alexis, 34, of Fort Worth, Texas, died in a gun battle with police during the rampage at Washington Navy Yard.

Eight others were wounded in the attack, which began at around 8:20 local time (12:20 GMT) on Monday.

US President Barack Obama ordered flags be lowered to half mast at the White House and Capitol Hill.

Rajini Vaidyanathan reports.