On June 4, Mitsugu Baba, the 75-year-old boss of the Aizukotetsu-kai, allegedly used a courier service to ship four grams of marijuana to a gang-affiliated residence in Shiga Prefecture.
Police also arrested Ichiro Ogami, 50, the head of the Baba-gumi, an affiliate gang of the Aizukotetsu-kai, and three other persons.
None of the suspects has commented on the allegations.
According to the anti-organized crime division of the prefectural police, the Aizukotetsu-kai, which is based in Kyoto’s Ukyo Ward, has approximately 130 members. Baba became the head of the gang in November of 2008.