All-clear at US Navy Yard after shooting reports

A US Navy installation in Washington was given the all-clear on Thursday  after locking down for several hours over unconfirmed reports that an active gunman was on the loose, authorities said. The Navy said on Twitter that there was “no sign of shooting” and that all personnel were fine.

Local media reported that the district police and the FBI also had given a thumbs-up after a building-to-building search of the US Navy Yard turned up no evidence of a shooter or that any shots were fired.  The Navy Yard, a complex of naval offices in southeast Washington, was the scene of a September 2013 mass killing in which a lone gunman fatally shot 12 people.