A gunman opened fire in the baggage claim area at the Fort Lauderdale airport Friday, killing five people and wounding eight before being taken into custody in an attack that sent panicked passengers running out of the terminal and onto the tarmac. An additional 37 people were injured after the incident. The gunman was identified as Esteban Santiago-Ruiz, 26, who had active-duty military identification on him. Santiago-Ruiz was in federal custody, the Broward County Sheriff Scott Israel said. He will face federal charges. FBI sources told CBS News ... that they ran a full database check on Santiago-Ruiz, and they found no connection to terror groups. In Nov. 2016, Santiago-Ruiz walked into an FBI office in Anchorage and claimed he was being forced to fight for the Islamic State of Iraq and Syria (ISIS), law enforcement sources told CBS News. He also said his mind was being controlled by the CIA to watch ISIS videos. He was sent to a psychiatric hospital after police were called. He was also investigated as part of a child porn investigation in either 2011 or 2012, law enforcement sources told CBS News. Three weapons and a computer were seized, but no charges were filed. A witness, Mark Lea ... said the shooter was calm as can be ... he just walked in and started shooting. He wasn't frantic, he wasn't psychotic." Lea estimated that the suspect shot about 24 rounds, [then] walked out of "door 2" and "lay spread-eagle on the floor and waited for law enforcement to arrive."