Japanese admiral are aggravating to analyze a anatomy begin on a Delta Airlines flight which accustomed in Tokyo from New York on Sunday night.A artisan begin the anatomy central one of the landing accessory compartments of the Boeing aircraft during maintenance.The man, who was of aphotic appearance and dressed alone in dejected jeans and a long-sleeved shirt, was accustomed no authorization or claimed belongings, badge say.He was possibly a stowaway and apparently froze to death, they added.The temperature in that allotment of the even avalanche to about -50C during flighPolice official Zenjiro Watanabe told the Associated Press that the man charge accept sneaked in aloof afore departure.He said that the man's anatomy had no arresting injuries except for signs of frostbite.Mr Watanabe said badge were investigating the adventure both as an blow and a accessible crime.There has been no official animadversion so far from Delta officials.