Airport sent a series of “angry, rambling” text messages to family members in the days leading up to Friday’s rampage, the CNN reports.
The revelation come as investigators are trying to piece together the background and possible motive of alleged gunman Paul Anthony Ciancia, who police say killed a TSA officer and wounded others in a shooting rampage inside Terminal 3 at LAX.
A man armed with what police say was an assault rifle and carrying materials expressing anti-government sentiment opened fire Friday morning at Los Angeles International Airport, killing one person before being chased down himself, authorities said.
“We are currently investigating his background and more about him,” FBI Special Agent in Charge David Bowdich told reporters.
Ciancia, 23, recently moved to Los Angeles from New Jersey.
In texts to his brother and father, Ciancia said he was unhappy and discouraged living in Los Angeles, according to the intelligence source with knowledge of the investigation. The source spoke on condition of anonymity, citing the ongoing investigation.
The tone and nature of text messages alarmed his family, the source said.
Search warrants were being executed at his residence in Los Angeles and his former residence in New Jersey, said a law enforcement official, who had been briefed on the investigation. The official, who spoke on condition anonymity, was not authorized to release details to the media.