Airport shooter admits he was 'mind controlled' by a US intelligence agency, eyewitness claims there were at least three other "sleepers," shooters with high-powered rifles shooting into crowd.

Eyewitness: "There was like at least three people in there still shooting" after the first guy was caught.

Demoted and discharged Alaska National Guard private first class and alleged killer of 5 people at the Fort Lauderdale-Hollywood International Airport, Esteban Santiago, 26, may have been mind controlled or mentally ill, according to FBI officials.

Santiago, who was arrested in January and waiting to stand trial in March on criminal charges, recently showed up to an F.B.I. office in Anchorage unannounced seeking help.

Santiago told the F.B.I. he thought he was being mind controlled, possibly by the U.S. government or the C.I.A. and admitted hearing voices, which Santiago said told him to study "extremist materials on the Internet," the New York Times reports.

Despite the fact that Santiago himself, his girlfriend, and even co-workers warned authorities of his experiences the F.B.I. failed to detain him before his travels to Florida.

"Records show Santiago had three driver's licenses from Alaska, New York, and Puerto Rico," along with his military I.D., which were all on his person during Friday's shooting, as reported by a local ABC news affiliate.

Just like a Manchurian candidate, Santiago "walked to the baggage claim area, where witnesses said he pulled the trigger and appeared to be aiming at victims' heads. Witnesses said Santiago didn't say a word. He shot his weapon until he ran out of ammunition. He threw the gun down and laid spread-eagle on the ground until a Broward Sheriffs' Office deputy came up to him."

USA Today reports:

Yet the troubling episode is now part of an emerging profile of a deeply disturbed man described by his aunt Friday as someone who had "lost his mind."

Maria Luisa Ruiz of Union City, N.J., said her nephew, who had moved to Alaska for work as a security guard, only recently began to show signs of instability.

"Like a month ago, it was like he lost his mind," she said "He said he saw things."

Additionally, it is also important to point out that Former White House Press Secretary Ari Fleischer was present at the airport during the shooting and was live-tweeting details about the situation.