Osamu Yano has confessed to killing Mamoru Saito, who went missing in 1998
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Read the latest stories on Japan’s criminal underworld
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New gang called Ninkyo Dantai Yamaguchi-gumi expected to form
Suspect accused of stealing ¥25,357 in merchandise from grocery store
Man in custody in separate case confessed to dumping the body
Gang members accused of threatening man, 74, at office in Minato Ward: 'Things will go south for you if you make us angry'
Bones confirmed to belong to Mamoru Saito were found in mountains of Saitama Prefecture last year
One of the suspects told the victim, 'Things will go south for you if you make us angry'