The Suishin-kai was a Japanese

yakuza , also known as , are members of transnational organized crime syndicates originating in Japan. The Japanese police and media (by request of the police) call them , while the yakuza call themselves . The English equivalent for the term ''yak ...

gang based in

Nagasaki , officially , is the capital and the largest Cities of Japan, city of Nagasaki Prefecture on the island of Kyushu in Japan. Founded by the Portuguese, the port of Portuguese_Nagasaki, Nagasaki became the sole Nanban trade, port used for tr ...

. The gang, affiliated with the

Yamaguchi-gumi is Japan's largest ''yakuza'' organization. It is named after its founder Harukichi Yamaguchi. Its origins can be traced back to a loose labor union for longshoreman, dockworkers in Kobe before World War II. It is one of the largest organized cr ...

,The Australian - Nagasaki mayor's yakuza killer to hang
/ref> Japan's largest yakuza syndicate, came to prominence in April 2007 when its former

underboss Underboss () is a position within the leadership structure of certain organized crime groups, particularly in Sicilian Mafia, Sicilian and Italian-American Mafia crime families. The underboss is second in command to the Crime boss, boss. The un ...

(then demoted to Captain),

Tetsuya Shiroo was the former leader of the Suishin-kai, a Nagasaki-based ''yakuza'' group affiliated with the Yamaguchi-gumi, the largest ''yakuza'' organization in Japan. Murder of Iccho Itoh On April 17, 2007, Shiroo shot Iccho Itoh, the mayor of Nagasaki ...

, shot and killed the mayor of Nagasaki, Iccho Itoh. The killing is believed to have been the result of a personal grudge on the part of Shiroo, and was not authorized by the Yamaguchi leadership or by Shiroo's colleagues in the Suishin-kai. After the killing, the Suishin-kai faced intense police and public scrutiny as investigators raided their Nagasaki offices in the search for evidence. A few days later, the Suishin-kai announced that it would voluntarily disband, and most of its members are now affiliated with other groups.

References

Organizations established in 1995 1995 establishments in Japan Organizations disestablished in 2007 2007 disestablishments in Japan Yakuza groups based in Kyushu Yamaguchi-gumi {{Japan-crime-stub