Published July 2, 2015 8:13am EDT | Updated July 23, 2015 5:26pm EDT

Police Respond To Reports Of An Active Shooter At Washington Navy Yard

Police and the FBI responded to reports of an active shooter at the Washington Navy Yard on Thursday, according to NBC News. It's unclear whether there are any injuries. The Navy yard was the site of another shooting in September 2013, the second deadliest mass killing on a U.S. military base.