Operation Delta Blues is a federal crackdown on drug trafficking and public corruption . The two-year investigation involved 16 court-authorized wiretaps . The inquiry focused on Helena-West Helena and Marianna , Arkansas . ` Comment:
Operation Delta Blues is a federal crackdown on drug trafficking and public corruption . The two-year investigation involved 16 court-authorized wiretaps . The inquiry focused on Helena-West Helena and Marianna , Arkansas . `` We believe there are more cases of corruption , '' an FBI agent says .