At least 6 dead in Washington Navy Yard shooting, say officials
WASHINGTON (AP) - At least one gunman opened fire inside a building at the Washington Navy Yard on Monday, and officials said six people were killed and at least four were wounded, including a law enforcement officer.
United States President Barack Obama called the attack in the heart of a military complex a "cowardly act".
One shooter had been killed, but police were looking for two other potential gunmen wearing military-style uniforms, District of Columbia Police Chief Cathy Lanier said.
The rampage led to tightened security at the Capitol nearby.