They brought the case under racketeering laws, which were passed to deny mafia gangs the profits of their crimes.

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They have said their investigations have revealed an extensive and complex network of Italian and foreign companies which have enabled mafia crime gangs to become involved in the development of dozens of properties, including tourist resorts.

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Investigators say the ring involved three gangs based in the city of Minneapolis - the Somali Outlaws, the Somali Mafia and the Lady Outlaws.

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