Washington #Navy Yard #Shooting Witness: At Least 12 Dead As Police Hunt For Suspects

One shooter is dead after opening fire Monday morning at the Washington Navy Yard and authorities are investigating the possibility of additional shooters wearing military-style uniforms, Metropolitan Police Chief Cathy Lanier confirmed.

One shooter is dead after opening fire Monday morning at the Washington Navy Yard and authorities are investigating the possibility of additional shooters wearing military-style uniforms, Metropolitan Police Chief Cathy Lanier confirmed.

At least 12 people were killed, Mayor Vincent Gray announced at an afternoon press conference. No motive is known at this time.

"We don't know for certain whether there are other shooters," Gray said. "We are continuing to engage in that investigation."

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Officials said a suspect began shooting inside the Naval Sea Systems Command Headquarters building at 8:20 a.m. Several news outlets reported that a suspect barricaded himself inside a particular room, but police have not confirmed. Approximately 3,000 people work in the building.

A "shelter in place" order was issued for Navy Yard personnel. At least six schools were on lockdown as a precaution in the D.C. area, according to CNN.