- The suspect showed up several months ago at the FBI office in Anchorage, law enforcement officials told CNN. He was interviewed and said he was hearing voices in his head, including some telling him to join ISIS. He was taken to a hospital for a mental health evaluation, the officials said. He voluntarily checked himself in, the officials explained.
- A senior federal law enforcement official told CNN the visit came in November and Santiago reported his mind was being controlled by a US intelligence agency. Santiago said he didn't want to harm anyone but was erratic and made disjointed statements. The FBI interviewed family members and checked with other agencies and in databases before closing its investigation.
Some friends of Santiago accompanied him to the FBI office, law enforcement sources said.
- Santiago worked for a security company in Anchorage, a law enforcement source said. CNN called the company and the owner said he was working with law enforcement.