The Lone Gunman of Navy Yard Shooting

The 34-year-old former Navy reservist is dead. His motive is still unclear.

Aaron Alexis (FBI via Getty Images)

Two law enforcement officials said there are at least nine fatalities, including the shooter. The dead shooter had an assault rifle and a handgun, two law enforcement officials said. One said he also had a shotgun.

The officials said police are working under the theory that there may be additional shooters because of witness accounts and surveillance video. One of those officials also said all the weapons were not accounted for.

Read more at the Washington Post.