Authorities evacuated a terminal at LaGuardia Airport in New York late on Thursday after a vehicle was abandoned outside the terminal, local media reported. Authorities told passengers to leave Terminal B at about 11 p.m. local time as they investigated a car that was left unattended with its doors open, several media outlets reported.

Several passengers tweeted photos of military personnel standing guard and walking through the airport. Photos also showed passengers standing or walking outside the terminal. “Just landed at LGA and entire arrivals have been closed and there are soldiers with AR-15s everywhere,” Dan Chen tweeted. Airport officials and police were not immediately available for comment.