The Navy Yard in Washington, USA, has been put on lockdown Thursday as police responded to a report of an active shooter at the facility, authorities said.
The call came in about 7:40 a.m.
As a precaution, security has also been beefed up at the White House.
D.C. Police have closed streets near the scene and there is heavy police presence.
The U.S. Navy retweeted a message from their Washington district office saying “no incident can be confirmed as of yet.”
The Associated Press, citing an official, said shots have been reported in a building.
Navy Lt. Cmdr. Scott Williams told CNN that he did not hear gunshots, but saw people running and shouting to “stay away from the cafeteria.”
Some buildings have been searched and no evidence of a shooting has been found.
A similar incident occured in 2013 at the same facility in which a lone gunman shot and killed 12 workers and injured three others.