Investigators were still trying to figure out on Saturday whether an 80-second airport shooting rampage, allegedly carried out by a gunman more than 4,000 miles from home, was driven by a terror motive or mental illness, authorities said.
A day after five were killed at Fort Lauderdale-Hollywood International Airport, agents had interviewed more than 100 people, including the suspected shooter, Esteban Santiago, 26, who'd surrendered by dropping onto the floor near a baggage area.
Authorities and family members portray Santiago, a U.S. citizen with ties to New Jersey and Puerto Rico, as an Iraq veteran who struggled with mental health issues and who, two months earlier, had walked into an Alaska FBI field office and told agents his mind was being controlled, complaining that the government was forcing him to watch Islamic State videos.
Investigators are scouring Santiago's electronics and digital media, a law enforcement official familiar with the case said, trying to determine whether he had any real contact with Islamic State sympathizers and whether that motivated him to carry out the shooting.
"We have not ruled out anything," George Piro, the FBI special agent in charge of the bureau's Miami division, said at a Saturday morning briefing. "We continue to look at all avenues, all motives for this attack. And we continue to look at the terrorism aspect as a motive."
The bloody rampage sent people scrambling through the terminals and across the airfield at one of the country's busiest airports, shutting down all flights for hours as paramedics and federal and local law enforcement officers flooded the scene. Six were injured in the shooting, and dozens more were also injured in the chaos that followed the shooting.
Santiago was placed in federal custody Saturday morning after a lengthy interview by Broward County sheriff's deputies and FBI agents. He will face federal charges, officials said.
The FBI is leading a sprawling investigation that spans from Florida to Alaska. Names of victims have not yet been released because not all families have been notified.
Santiago is believed to have lived most recently in Alaska with a girlfriend and young child. In his November encounter with the FBI, Santiago clearly indicated he was not intent on hurting anyone, Piro said. But what another federal official called incoherent and erratic statements led agents to ask local police to take him for a mental health evaluation. The FBI interviewed his family members, conducted database reviews and interagency checks but ultimately closed what it termed an "assessment" of Santiago.
In Fort Lauderdale, at the Terminal 2 baggage claim, Santiago picked up his bag from the carousel, went to the restroom and loaded his 9mm handgun, federal officials said. When he came out, he allegedly began firing.
Travelers are allowed to bring firearms with them onto flights as long as the guns are unloaded, locked in a hard-sided container and inside checked baggage, according to the Transportation Security Administration. Ammunition can be brought onto flights but also must be placed in checked baggage.
Mario Andrade, a driver from Carey Limousine, was waiting for his customer, former George W. Bush White House press secretary Ari Fleischer, near the bottom of the escalator in the Delta baggage area of Terminal 2. He was holding a sign with Fleischer's last name and talking on the phone with another driver. Fleischer's 12:15 p.m. flight was late and it was nearly 1 p.m.
Suddenly, he heard gunfire.
"It was very fast, like tat-tat-tat-tat-tat-tat," Andrade said. "I said, Oh my God, someone is shooting!"
He immediately dropped to the floor. People were running and he heard screaming all around him.
Andrade looked up and saw a man in a blue shirt who had a gun in his hand. The gunman began walking slowly toward him. He said the gunman had a "surprised look" on his face, "like, Oh my God, what happened?"
Relatives of the alleged shooter told news outlets that Santiago had a history of mental health problems, including some that followed his military service in Iraq with the Puerto Rico National Guard.
"Only thing I could tell you was when he came out of Iraq, he wasn't feeling too good," his uncle, Hernan Rivera, told Newark's Star-Ledger newspaper.
His aunt told the newspaper he was hospitalized after returning from Iraq. "He lost his mind," Ruiz Rivera said in Spanish.
This booking photo provided by the Broward Sheriff's Office shows suspect Esteban Ruiz Santiago, 26, Saturday, Jan. 7, 2017, in Fort Lauderdale, Fla. Relatives of the man who police say opened fire Friday killing several people and wounding others at a Florida airport report he had a history of mental health issues. They tell The Associated Press and other news outlets that some of the problems followed his time serving a military tour in Iraq, and that he was being treated at his current home in Alaska. (Broward Sheriff's Office via AP)
