The gang began operating in the region in December of 2016, according to the police. It had a well-defined hierarchy. There were ‘couriers’ (people leaving packages with drugs in predetermined areas for customers to pick up, translator’s note), ‘sales managers’, and ‘advertisers’ in the gang. 

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https://en.crimerussia.com/drugmafia/police-arrests-15-people-of-drugs-gang-in-saratov/