A shooting erupted Wednesday outside the suburban Washington headquarters of the National Security Agency, a secretive intelligence organisation responsible for global USA electronic eavesdropping, leaving at least one person injured, officials said. "We will continue to provide updates as they become available", their statement said.
Federal Bureau of Investigation officers from the Baltimore office are responding to the incident.
"The situation is under control and there is no ongoing security or safety threat".
Aerial footage captures by local news outlet WJLA shows bullet holes in the front windshield of a black SUV.
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The Washington Post reports the injured person is a law enforcement officer and suspect is in custody.
The Anne Arundel Police first reported the news of the apparent shooting on Twitter, but are not the investigating agency.
Maryland State Highway Administration has closed Route 32 in both directions at Canine Road.
A handcuffed man was on the ground, surrounded by police, NBC Washington said.
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An NSA spokesman told local media the area outside America's electronic espionage agency was now secure after a "security incident".
Gunfire rang out after a black SUV pulled up at the entrance to the facility in Fort Meade, Maryland.
In March 2015, a 27-year-old man died after the stolen SUV he was in crashed outside the NSA.
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