Updated

Authorities say a loud auto crash that some passengers thought was shots being fired and a call reporting a gunman prompted evacuations at two terminals of Los Angeles International Airport.

LAX spokeswoman Nancy Castles says the crash outside Terminal 5 Friday night caused passengers to report gunfire, and many fled from the terminal.

Castles says soon after the crash an anonymous caller reported a gunman at a gate in Terminal 4. Police ordered the evacuation of that terminal as a precaution. The terminal has been deemed safe and travelers can return, but they must go through security again.

The incident brought temporary traffic backups and flight delays.

It came three weeks after a gunman walked into the airport and opened fire, killing an airport security officer and injuring three other people.