The Pentagon complex was locked for about 75 minutes on Tuesday after a shooting at the building’s subway entrance.
It wasn’t immediately clear how many shots had been fired or whether someone was injured or killed.
Just before noon, officials said the scene was secured and a later message posted on Twitter announced that the building had reopened but the subway entrance remained closed.
According to a public relations officer in the Secretary of Defense’s office, at about 10:45 am Eastern, a message was read over the Pentagon’s loudspeaker system saying that there had been “a shooting in the metro bus area,” instructing the staff to ” to stay”. in the building until further notice. “
The announcement was followed by a similar warning to all computer terminals in the Pentagon about 15 minutes later.
The security in the building is guaranteed by the Pentagon Force Protection Agency. Calls to the agency spokesman were not answered immediately.
The entrance to the Pentagon’s metro station was previously attacked in March 2010 when John Patrick Bedell pulled out two 9-millimeter semi-automatic weapons and shot at the security checkpoint near the entrance to the Pentagon’s metro station, wounding two officers in the process. Mr. Bedell was shot dead by security guards.