North and South Caucasian ethnic criminal groups annually commit some 4.5 thousand crimes in Moscow, chief of the operative reconnaissance section under the department for struggle against organized crime Andrey Bolshakov told journalists, Russian media reported. At present 136 criminal cases are being investigates at courts, police officers have arrested 210 participants of ethnic criminal groupings, including 12 organizers. In A. Bolshakov's words, the Chechen, Azeris, Armenian, Georgian-Abkhazian, Dagestan and Ingush organized criminal groupings are considered to be the oldest in Moscow. They had already been formed in the 90-s of the past century.