On Tuesday Andrei Kozlenok, co-founder of the Golden Ada corporation, was released from prison after servicing his sentence. The main figure of one of the most notorious recent-years criminal cases, known in the press as "the diamond adventure of the century", he left the prison walls on Tuesday. In all, Andrei Kozlenok has been in custody for four years. The Golden Ada firm is charged with stealing a large batch of diamonds and jewels, worth over 187 million dollars, from the Russian Precious Metals and Gems State Reserve. According to different sources, up to 40 million dollars of these has been returned.