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U.S. Park Police and Metropolitan Police Department officers are responding to Navy Yard for a report of active shooter. No casualties at this time.
An employee inside Navy Yard reports that alarms are sounding and the buildings are on lockdown.
We are waiting for more details.
In 2013, a gunman shot who got into a building at the Navy Yard killed 12 people and injured three others. He was fatally shot by a Washington Metropolitan police officer.
South Capitol St SE from M to I St SE and 11 St SE from M St to Virginia Ave SE are closed at this time.