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