SAN FRANCISCO (AP) — San Francisco International Airport international terminal was evacuated Friday night due to a bomb threat and authorities found a potentially incendiary device, officials said. A person is in custody.

The bomb threat was reported around 8:15 p.m. and authorities discovered a suspicious package, according to San Francisco police. Airport investigators “considered the object to be possibly incendiary”. A man was taken into custody but further details were not immediately available.

The terminal was evacuated “out of an abundance of caution”, police said. Hundreds of travelers were forced to leave the terminal.

The airport announced the evacuation on Twitter at 9:28 p.m. without providing details of police activity.

AirTrain and Bay Area Rapid Transit trains from the airport have been suspended. The airport BART station was closed at 8:42 p.m., according to a tweet from the transit agency.

Passenger disembarkation and embarkation were restricted to domestic terminals at the airport.

Additional information was not immediately available. An airport spokesperson did not immediately return a request for comment.