Washington, DC, United States (4E) – A gunman shot four people dead and wounded eight more in one of the buildings at the Washington Navy Yard on Monday, authorities said.
The report on the casualties came via a tweet from Naval Installations Command spokesman Capt. Ed Buclatin. Among the injured were a Washington police officer and a base security guard, said Metropolitan Police Department spokeswoman Saray Leon.
The gunman started shooting at 8:20 a.m. inside Building 197 housing the Naval Sea Systems Command, Navy officials said.
Cmdr. Tim Jirus said a man he was talking to at the back of the building was shot in the head. Hundreds of police and naval officers responded to the shooting and surrounded the building later.
The Navy ordered people inside the yard to stay in place as police search for the shooter, whom witnesses described as a tall black man armed with a rifle.
Around 3,000 people work in Building 197.
The shooting triggered the lockdown of nearby schools and the suspension of flights out of the Reagan National Airport in Virginia. The 11th Street Bridge was shut down, and people were warned to stay away from the area, the police spokesman said