Surveillance video shows Navy Yard shooter

Posted on: 2:11 pm, September 25, 2013, by , updated on: 06:01pm, September 25, 2013

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  • Alexis drives his rental car, a blue Toyota Prius, through the Washington Navy Yard main gate.

  • Alexis’ rental car enters Washington Navy Yard Parking Garage #28 at 7:53 a.m. on September 16, 2013.

  • Alexis enters Building #197 at 8:08 a.m., 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 of Building #197 carrying the Remington 870 shotgun.

  • Alexis moves through the hallways of Building #197 carrying the Remington 870 shotgun.

  • Aaron Alexis’ backpack was found in the fourth-floor men’s bathroom, hanging on the back of a stall door.

  • Aaron Alexis’ rental car, a blue Toyota Prius with New York plates, was located in Washington Navy Yard Parking Garage #28.

  • Aaron Alexis’ Remington 870 shotgun with sawed-off barrel and stock. Etchings on the left side of the shotgun receiver read “Better off this way!” and “My ELF weapon!”

  • A close-up photograph of the etchings on the left side of Alexis’ shotgun receiver.

  • Aaron Alexis’ Remington 870 shotgun with sawed-off barrel and stock. Etching on the right side of the shotgun receiver read “Not what yall say!”

  • A close-up photograph of the etching on the right side of Alexis’ shotgun receiver.

  • Etching on the barrel of the Remington 870 shotgun used by Alexis read “End to the torment!”

WASHINGTON (CNN) — Aaron Alexis, the man who went on the deadly shooting rampage at the Washington Navy Yard, was under the “delusional belief that he was being controlled or influenced by electro-magnetic waves,” the FBI’s Valerie Parlave said Wednesday.

An FBI evidence response team collects evidence at Building 197 at the Washington Navy Yard. A gunman killed 12 people at this building Sept. 16, 2013.

An FBI evidence response team collects evidence at Building 197 at the Washington Navy Yard. A gunman killed 12 people at this building Sept. 16, 2013.

Parlave, assistant director in charge of the FBI Washington Field Office, said Alexis acted alone and there was no evidence he was targeting particular people.

Alexis, who was 34, went on the rampage September 16, killing 12 people and wounded several others. Chilling video released Wednesday shows Alexis running through hallways with a sawed-off shotgun.

The investigation indicates that Alexis “was prepared to die during the attack and that he accepted death as the inevitable consequence of his actions,” Parlave said, citing electronic media recovered from the shooter’s belongings.

Phrases were also scrawled onto Alexis’ shotgun, Parlave said. They read: “End to the torment,” “Not what y’all say,” and “Better off this way.”

He also wrote “My ELF weapon,” which is believed to be a reference to electro-magnetic waves.

“ELF technology was a legitimate program for Naval sub-tonal submarine communications,” Parlave said. “However, conspiracy theories exist which misinterpret its application as the weaponization of remote neural frequencies for government monitoring and manipulation of unsuspecting citizens.”