False alarm of active shooter causes traffic nightmare at LAX

LOS ANGELES, CA -- A false alarm of an active shooter at the Los Angeles International Airport caused widespread panic and impacted traffic and flights Sunday night.

People were seen running from multiple terminals at the airport after authorities said a possible noise that sounded like gunfire caused travelers to flee.

Travelers at the airport tweeted that there were shots fired in different terminals and shared videos of people rushing out of the airport and onto the tarmac.

The airport temporarily shut down the upper and lower levels for arrivals and departures of the central terminal area as part of the investigation. The short closure caused a massive traffic backup.

Terminals 1, 4, 6 and 7, were evacuated as a precaution, according to the airport's TSA. People were let back into the airport shortly before 10 p.m. and were told to call their airlines for updates on their flights.