FBI: Alexis acted alone, had only one weapon, arrived in D.C. 3 weeks ago
“Ms. Parlave also confirmed that the shooter entered the Navy Yard Building 197 armed with just a shotgun.
We do not have any information at this time that he had an AR-15 in his possession,” she said. She added that it appears he may have picked up handguns once inside the building."
http://www.washingtontimes.com/news/...eapon-arrived/