Washington Navy Yard Shooting: Multiple Injuries Reported 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.

At least six people were killed and at least four others were wounded, law enforcement officials told the Associated Press.

"We are still trying to confirm the number of fatalities," Mayor Vincent Gray said at a press conference. "As far as we know, this is an isolated incident."