The LAPD said it was on "tactical alert due to a major incident" at the airport and the fire department said they were assisting at a multi-patient incident.
A gunman opened fire at LAX, injuring several people and prompting an evacuation at the airport, ABC News reports.
This is a developing story...
Update: John Amato via NBC News
The passenger approached document checker and shot them. I TSA agent killed, another wounded at Terminal Three