An explosion outside the Yamaken-gumi's headquarters destroyed a door and shattered nearby windows
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Read the latest stories on Japan’s criminal underworld
JAL Flight 123 crashed in Gunma Prefecture on August 12, 1985, killing 505 persons aboard
In June, police accused the Kudo-kai's top boss, Satoru Nomura, of concealing 220 million yen in taxable income
Isao Seki sponsored a meeting for supporters and voters of a Liberal Democratic Party candidate in violation of election laws
The proportion of gang members in their 40s jumped from 60 to 74 percent between 2006 and 2014
Police have arrested 39 gang members on drug-related charges since October of 2013
The suspects are believed to have been involved in 153 incidents with losses totaling 47.3 million yen
The suspects waved fans and showed their colorful tattoos in violation of the law
Customs officials found 138 kilograms of stimulant drugs inside 53 fish
Two Inagawa-kai gangsters demanded 20,000 yen each month from a massage parlor in Machida