Security was stepped at U.S. government buildings in the nation’s capital on Thursday after the Washington Navy Yard was shut down while authorities investigated initial reports of an active shooter.
The military installation was under “lockdown/shelter in place,” the U.S. Navy said in a tweet Thursday morning. “Investigation continues. No further info at this time.”
There was no confirmation from the Navy or law enforcement authorities of a shooting, a suspect or any injuries.
Meanwhile, Secret Service agents cleared tourists from the area in front of the White House and shut down Lafayette Park across the street.
U.S. Capitol Police sent additional agents to the Capitol grounds as a proactive measure.
“There is no known threat to the Capitol Complex,” Lieutenant Kimberly Schneider, a spokeswoman for the Capitol Police said in an emailed statement. “We have additional units in the field deployed strategically around the Capitol Complex, as the situation dictates, while remaining available to continue to provide mutual support at the Navy Yard.”
The Navy Yard was the site of a mass shooting in 2013, when contractor Aaron Alexis killed a dozen people.