the Yamaguchi-gumi are the largest underworld group in Japan. Photo: AFP

Japanese police hail diminished yakuza numbers but gangs may simply be waiting to pursue casino cash

Authorities attribute the steady decline to a number of new laws introduced in 2011, including legislation that made it illegal for owners of legitimate businesses to pay protection money to gangsters

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the Yamaguchi-gumi are the largest underworld group in Japan. Photo: AFP
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