One or more shooters have shot at least 10 people resulting in multiple fatalities at a Navy building in Washington, U.S. Navy authorities said Monday. One shooter is dead.
One of the possibly two shooters has died, according to The Associated Press. Reports of shots fired came at around 8:20 a.m. at the Naval Sea Systems Command headquarters in southeast Washington. A total number of shooters have not been verified.
However, police sources told The Washington Post that three shooters, including one in military fatigues, were involved in the incident.
The facility, where about 3,000 people work, is on lockdown as authorities continue their search, Navy officials said.
A D.C. police officer was among those injured and all were listed in critical condition, according to news reports..
A program management analyst, who is a civilian with the U.S. Navy, said a gunman was shooting from a fourth floor overlook in the hallway outside his office, AP reported. The U.S. Navy employee said the gunman was aiming down at people in the building's cafeteria on the first floor.
One of the gunmen is described as a tall, African-American male who sprayed fire from an AR-15 assault rifle.
"We saw him hold the rifle, and we saw him aim it in our direction," a witness told FoxNews.com.
Naval Sea Systems Command is the largest of the Navy's five system commands, AP reported.
U.S. Capitol Police said they are conducting enhanced security operations on the Capitol Complex out of an abundance of caution. Up to ten have also reportedly been locked down.
President Obama had been briefed on the incident, according to White House officials.
"The President directed his team to stay in touch with our federal partners, including the Navy and FBI, as well as the local officials," officials said in a statement. "We urge citizens to listen to the authorities and follow directions from the first responders on site."