Two Delta Air Lines (search) planes landed without incident Friday at Kennedy Airport after authorities received reports that the flights had been threatened.

A passenger aboard one of the flights was taken off the plane and was being questioned, said U.S. Customs and Border Protection (search) assistant commissioner Kristi M. Clemens.

Both aircraft were searched and the pilots interviewed, but no further problems were discovered, authorities said.

Dag Erik Kleven, 20, a passenger from Norway who was on Flight 119 from Paris, said that when his flight landed in New York, he saw two law enforcement officers board the plane. He said a man sitting in the first-class section was removed without incident.

Marcel Teunissen of the Hague, who was aboard the other flight, said that an announcement had been made before the flight took off in Amsterdam that there would be a slight delay because a woman had been removed from the plane due to security concerns.

A spokesman for the Port Authority of New York and New Jersey, Steve Coleman, said that his agency received a number of erroneous reports about the flights.

He said reports involved "people of interest" on board and another had a plane being escorted to Kennedy Airport (search) by F-16 fighters.