RUSSIA: Who ordered torture of Jehovah's Witness prisoner of conscience?

Fellow medical facility prisoners tortured prisoner of conscience Rinat Kiramov over four days in April after he refused to give names of fellow Jehovah's Witnesses in his home town. They punched, kicked, waterboarded, threatened with rape, and shocked him with a stun gun. It is unclear how the prisoners had access to a stun gun. Kiramov's lawyer lodged a complaint to the Prosecutor's Office, which passed it to police. Whether police investigators have decided to open a criminal case is unknown.