The man on Thursday boarded an Etihad Airways flight bound for the United Arab Emirates , and when the plane's doors shut, he notified a flight attendant, said Steve Coleman, a spokesman for the Port Authority of New York and New Jersey.
Port Authority police arrested the man on a misdemeanor charge of criminal trespass, Coleman said. The man, who later was released, is a passenger and baggage screener for the Transportation Security Administration, agency spokeswoman Ann Davis said.
A telephone call to an airline spokesman was not immediately returned Thursday night.
The discovery of the submarine has unveiled a few "inconsistencies." For example, how can one explain the fact that the sub was found where it needed to be searched for from the start?