WASHINGTON (AP) - In a news conference Wednesday, the FBI revealed video footage from surveillance cameras of Aaron Alexis during the shooting at the Navy Yard on Sept. 16. In the video, Alexis is seen walking through hallways and stairwells.
Alexis was later killed in a shootout with police.
The FBI says there is no indication that the Navy Yard shooter targeted any specific individuals when he opened fire inside a building, killing 12 people.
Valerie Parlave, head of the FBI's field office in Washington, said Wednesday during a news conference that investigators are continuing to explore the background and motivations of 34-year-old Aaron Alexis. However, she says Alexis had a well-documented history of mental health issues.
Parlave says Alexis held a delusional belief that he was being controlled by extremely low frequency waves, or ELF waves. Alexis had written "my ELF weapon" on a shotgun he used in the rampage last week.
The video footage from closed-circuit cameras includes the following:
- Alexis drives his rental car, a blue Toyota Prius, through the Washington Navy Yard main gate.
- Alexis enters Building #197 carrying a backpack. Alexis had legitimate access to the Washington Navy Yard as a result of his work as a contractor and he utilized a valid pass to gain entry to the building.
- Alexis moves through the hallways and a stairwell of Building #197 carrying a Remington 870 shotgun.