TOKYO, May 19 (AFP) - SNIPPET: "The pilot of the Boeing 747-400 with 407 passengers and crew bound for Minneapolis turned around late Monday about three hours into the flight from Tokyo's Narita airport after crew found the two men who refused to leave the cabin bathroom. Reports said the pair, who identified themselves as Chinese citizens aged in their 20s, had boarded the flight during an earlier stop in Shanghai. Japanese immigration officials were questioning the men, who said they did not have passports."