Flights at LA International Airport are returning to normal after earlier, unconfirmed reports of an active shooter.
A person wearing a 'Mask of Zorro' costume has also been detained by the LAPD.
Videos on social media showed people rushing out of the building as they were being evacuated.
Video shows passengers evacuated from plane headed back into LAX terminal after false alarm. https://t.co/PnfJQY61r7https://t.co/fzw47IXXvc
— ABC News (@ABC) August 29, 2016
Local police say they searched the airport, adding: "All precautions being taken to ensure safety of public. Remain calm."
The airport say the departures and arrivals levels of Central Terminal Area (CTA) were closed, but have now re-opened.
Passengers are also set to be re-screened.
<blockquote class="twitter-tweet" data-lang="en"><p lang="en" dir="ltr">T1, T2 & TBIT cleared & repopulated. Passengers will be re-screened. North side terminals are I n the process of being cleared</p>— LAX Airport (@flyLAXairport) <a href="https://twitter.com/flyLAXairport/status/770131892788137986">August 29, 2016</a></blockquote>
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