Timeline of Navy Yard Shooting Developments
9/16/2013, 2:18 p.m.
WASHINGTON (CNN) -- 8:20 a.m. -- Active shooter is reported inside the Naval Sea Systems Command Headquarters building (Building 197) at the Washington Navy Yard in southeast Washington, according to a statement from the Navy. There is one confirmed injury. A "shelter in place" order is issued for Navy Yard personnel. Several hundred people are evacuated.
9:40 a.m. -- Departing flights are held on the ground at Washington Reagan National Airport; some arriving flights are delayed. The Federal Aviation Administration later said this step was taken to give priority in the airspace around Washington to law enforcement helicopters and other aircraft.
9:50 a.m. -- A Metropolitan Police Department officer is among "several" injured in a shooting at the Navy Yard, according to a D.C. police spokeswoman.
9:56 a.m. -- President Barack Obama has been briefed "several times" about the situation by homeland security and counterterrorism officials.
10:05 a.m. -- U.S. Navy confirms via Twitter several injuries with reports of fatalities.
10:06 a.m. -- Chris Kelly, Metro police spokesman, tells CNN there are 10 victims, including a D.C. police officer and a law enforcement officer moments later described by another official as a base security officer. Kelly tells CNN the main suspect is an adult black male, 6 feet tall, bald head, medium complexion and wearing black clothing - black top and black jeans.
10:26 a.m. -- All flights resume at Reagan National.
10:34 a.m. -- Metro police spokeswoman Saray Leon denies media reports about three suspects possibly involved, saying authorities were looking for one suspect. Repeats 10 victims, but does not confirm fatalities.
10:36 a.m. -- Six public and private schools in the vicinity of the Navy Yard are locked down as a precaution. Two other public and two private schools would also be locked down. The nearby U.S. Transportation Department is also locked down.
10:55 a.m. -- A SWAT team is seen going through the gate at the main Navy Yard entrance. The SWAT team is seen escorting people out of the building where the shooter reportedly is located.
11:07 a.m. -- Law enforcement official reports the federal Bureau of Alcohol Tobacco, Firearms and Explosives emergency response team is sent to the scene. It is the same one that helped Boston police apprehend Dzhokhar Tsarnaev. The official notes the team includes approximately 20 specially trained, locally stationed special agents.
11:13 a.m. -- Multiple congressional aides from both parties who are involved in intelligence, homeland security and leadership say they have no indication that the attack at the Navy Yard was an act of terrorism.
11:29 a.m. -- Ed Zeigler, Director of Public Affairs for Naval District Washington, tells CNN two shooters "are down" at the Navy Yard. Zeigler cannot confirm if the shooters are in custody or dead. Zeigler also tells CNN there have been "multiple deaths" at the Navy Yard, but that those killed were not the two officers who had been shot. Zeigler says law enforcement is still trying to clear Building 197 to determine if there are any more shooters.