Operation Delta Blues is a federal investigation on drug trafficking and public corruption . The two - year investigation included 16 court - authorized wiretaps . Investigators are continuing to look at other law agencies for criminal misconduct , authorities said . The investigation focused on Helena - West Helena and Helena , Arkansas . ` ` We believe there are more cases of corruption , '' an FBI agent says .
Operation Delta Blues is a federal investigation on drug trafficking and public corruption . The two - year investigation included 16 court - authorized wiretaps . The investigation focused on Helena - West Helena and Helena , Arkansas . ` ` We believe there are more cases of corruption , '' an FBI agent says .