Navy Yard shooting: CCTV shows gunman Aaron Alexis
The FBI has released footage of gunman Aaron Alexis who shot dead 12 people at a Navy Yard in Washington.
The 34-year-old is seen stalking the corridors of the complex on 16 September. He was eventually shot by police in a running gun battle.
Valerie Parlave, head of the FBI's field office in Washington, said they were still investigating Alexis' background and motivations.
25 Sep 2013
- From the section US & Canada