A US-bound ANA flight was forced to return to Tokyo after an intoxicated passenger bit a crew member mid-flight. The man, reportedly a 55-year-old American, was "heavily drunk" when he bit a cabinet attendant's arm, slightly injuring her, a spokesman for the airline told AFP. Japanese media said the man told police he had taken a sleeping pill and did not remember what happened. It is the latest in a series of recent incidents to affect Japanese aviation.