Chicago-based United Airlines spokesman Charles Hobart said Sunday that Flight 895 left O'Hare International Airport for China yesterday.
The plane instead landed at Narita, which is one of Tokyo's main airports. No injuries were reported. He says 241 passengers and 15 crew members were aboard.
Hobart says law enforcement met the aircraft in Japan, but he declined to offer further details. Hobart says the flight has departed from Japan and is expected in Hong Kong.