A man suspected of carrying out a deadly attack at Los Angeles International Airport sent a suicidal text message to his sibling, police have said.
The alleged gunman killed a security officer and wounded three others before being injured in a shoot-out, according to authorities.
The suspect has been identified as 23-year-old Paul Ciancia, who is believed to hold a grudge against security services.
A note found in Ciancia's bag suggested themechanic was willing to kill any airport security officer he could confront with his rifle.
"Black, white, yellow, brown, I don't discriminate," the note read, according to a law enforcement official briefed on the investigation. The official spoke on the condition of anonymity because he was not authorised to speak publicly.
His father, who has the same name, called police around the time of the shooting to report his son had sent the text and he needed to find him, police said.
The elder Paul Ciancia, from New Jersey revealed one of his children had received the message from the younger Ciancia "in reference to him taking his own life".
The gunman, who managed to enter the secure area of Terminal 3, was reportedly shot in the mouth and leg by two airport police officers.