A lockdown at the Pentagon was lifted Tuesday morning after authorities in Arlington, Virginia, secured the scene of a shooting at a nearby Metro station that sent the nation’s defense headquarters and its roughly 27,000 employees into an hour-long lockdown.
The entire Pentagon complex—the largest office building in the world—was under a lockdown for just more than an hour after shots were fired Tuesday morning in the Pentagon Transit Center, a bus and train station that serves the Pentagon, according to the Pentagon Force Protection Agency.
According to the agency, the scene was cleared of threats about 75 minutes after the Pentagon facility was shut down, but asked people to avoid the area as it was “still an active crime scene.”
The lockdown was lifted just after noon, although some walkways and the Metro station remained closed, the PFPA said.
The nature and the magnitude of the shooting are still unclear, although Arlington Fire and EMS said units responded to “multiple patients.”
The Pentagon is the central hub for U.S. defense and employs roughly 27,000 military members and civilians in Arlington, just outside of Washington, D.C. Because of its role in U.S. defense, it’s been a tempting target for attacks before. In 2010, a man named John Patrick Bedell shot and wounded two security officers at the Pentagon’s Metro entrance before being shot and killed himself. The Pentagon was also targeted during the 9/11 terrorist attacks, when a plane was hijacked and flown into the west side of the building, killing 125.