Bribery case of FSB colonel Cherkalin goes to military court Cherkalin, who headed Department K of FSBâs economic security service, is now facing two criminal cases MOSCOW, March 11. /TASS/. The case of Kirill Cherkalin, a former senior officer of Russia’s Federal Security Service (FSB) accused of receiving a bribe of $850,000, has been submitted to the Moscow District Military Court, a court spokesperson told TASS. "The case of colonel Cherkalin has been submitted to the court to be heard on merits. It will be heard by Judge Vadim Korchagin. The date of the first session has not yet been set," the court said.