A gunman dressed in all black reportedly fired shots inside the Washington Navy Yard near our nation's capitol today, injuring at least 10 people.

The shooting unfolded approximately 8:20 a.m. when several shots rang out inside the headquarters for Naval Sea Systems Command in southeast Washington.


Google MapsThe shooting unfolded around 8:20 a.m. inside the headquarters for Naval Sea Systems Command in southeast Washington.

Several people are allegedly injured, and fatalities may exist, according to CNN.com.

There are reports of multiple bodies inside the facility at this time, but no official account of victims has been confirmed.

A Washington police officer has been hospitalized, and a base security guard officer, said Saray Leon, spokeswoman for Metropolitan Police Department.

Three people with multiple gunshot wounds, including the D.C. police officer, were admitted to MedStar Washington Hospital Center but are expected to survive according to a chief medical officer there.

A team of 20 special agents from the Bureau of Alcohol, Tobacco, Firearms and Explosives were reportedly sent to the scene. The same team, in fact, that helped apprehend Boston Marathon bombing suspect Dzhokhar Tsarnaev, according to officials.

Police described the suspect as an adult bald-headed male, approximately 6 feet tall, dressed in a black top and black jeans.

Two witnesses, employees of the Navy Yard, told CNN.com they heard a fire alarm go in the building, then saw a man with a rifle down the hallway as they exited the building.  The suspect aimed the gun at them and began to fire.


Win McNamee, Getty Images

The suspect was reported killed.  There appeared to be a police snipe, a scope attached and aimed at the campus peering out of a circling helicopter.  But there has been no official word as to whether a firing from the sniper's rifle was the cause of the shooter's death.

Traffic along Washington D.C.'s south side was shut down as emergency personnel, the FBI, U.S. Capitol Police and local D.C. police all responded. Several residents have been evacuated and at least eight schools were placed on lockdown as a precaution.

The Washington Navy Yard is the largest of the Navy's five system commands. It is also the Navy's oldest land establishment -- was created in 1799 following an act of Congress.

President Obama was briefed on the incident.  No motive for the shooting has been identified.