Tenn. Code Ann. § 40-3-208: Immunity of officials and employees

The district attorney general and assistant district attorneys general, district attorney general's investigators, district attorney general's secretaries and any other employee of the district attorney general shall not be civilly or criminally liable for acts performed pursuant to this part or in furtherance of the purposes of this part except as those acts relate to expenditure of and accounting for moneys collected under this part.