The All Nippon Airways flight was traveling from Japan’s Haneda Airport in Tokyo to George Bush Intercontinental Airport in Houston on Saturday when a passenger became “unruly,” according to the airline, which did not provide any details. Online records show that Flight 114 departed from Tokyo at around 10:33 a.m. local time.

A man on the flight attempted to open the plane's exit doors during the flight, a spokesperson for the Port of Seattle Police Department told CBS News.

The man was prevented from opening the emergency doors by two military veterans who were passengers on the plane.