LANHAM, Md. (CBSDC/AP) — The FBI shared new findings today on the Washington Navy Yard shootings that claimed 13 lives on Sept. 16.
Valerie Parlave, Assistant Director of the FBI’s Washington Field Office, said 34-year-old shooter Aaron Alexis legally purchased a Remington 870 shotgun and ammo in Northern Virginia on Sept. 14. The weapon, which was recovered at the scene, was altered with a sawed-off barrel and stock. Purple duct tape covered the end of the stock and handwritten etchings were carved into the firearm.
On the barrel of the shotgun were the words “End to the torment!”
Etched into the right side of the shotgun receiver were the words “Not what yall say!”
Etched into the left side of the receiver were the phrases “Better off this way!” and “My ELF weapon!”
RELATED: Aaron Alexis Biographical Information
The FBI says Alexis likely held a delusional belief that he was being controlled or influenced by extremely low frequency (ELF) electromagnetic waves.
An electronic media message written by Alexis that the FBI retrieved said: “Ultra low frequency attack is what I’ve been subject to for the last 3 months, and to be perfectly honest that is what has driven me to this.”
According to an FBI news release, ELF technology was a legitimate program for naval submarine communications, but “conspiracy theories exist which misinterpret its application as the weaponization of remote neural frequencies for government monitoring and manipulation of unsuspecting citizens.”
The FBI’s investigation suggests that Alexis “accepted death as the inevitable consequence of his actions” but was not targeting specific individuals, according to Parlave.
Alexis, a former Navy reservist and employee of a Defense Department subcontractor for a Navy-Marine Corps computer project, used a valid pass to get into the Navy Yard. He was shot and killed by police on the morning of the massacre.
The FBI also released information Wednesday about Alexis’s living arrangements in D.C.
PHOTOS: Inside the Navy Yard Shooting
He arrived in the city on Aug. 25. From Aug. 25 to Aug. 31, 2013, he stayed at a hotel in Bethesda. From Aug. 31 to Sept. 7, he had a hotel room in the Pentagon City area of Arlington. On Sept. 7, he moved to the Residence Inn in Southwest D.C., where he remained through Sept. 16.
He began working at the Washington Navy Yard on Sept. 9.
FULL TIMELINE OF ALEXIS’S ACTIONS ON SEPT. 16:
7:53 a.m. – Alexis’ rental car, a blue Toyota Prius with New York plates, entered Parking Garage #28 at the Washington Navy Yard, located directly across from Building #197.
8:08 a.m. – Alexis exited Parking Garage #28 on foot carrying a backpack. Alexis entered Building #197 and proceeded to the elevator.
8:09 a.m. – Alexis exited the elevator on the fourth floor and entered the men’s bathroom carrying a backpack and a clipboard.
8:15 a.m. – Alexis crossed the hallway into the 4 West area of Building #197 with shotgun, but without the backpack or a clipboard.
8:16 a.m. – Alexis shot the first victim in the 4 West area of Building #197.
8:17 a.m. – First 911 call is received from the fourth floor of Building #197.
8:20 a.m. – Alexis left the fourth floor using the stairs and entered the third floor.
8:28 a.m. – Alexis appeared on the first floor.
8:57 a.m. – Alexis returned to the third floor.
9:25 a.m. – Law enforcement shoot and kill Alexis on the third floor.
This story will be updated as more information becomes available.
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