Tennessee Code Title 8. Public Officers and Employees § 8-6-408

(a) Upon consent of the district attorney general, the attorney general and reporter may designate any full-time salaried attorney general investigator who meets the qualifications of § 38-8-106 and the training requirements of § 38-8-107(a), to act with the same authority as a district attorney criminal investigator when on active duty in connection with criminal matters for which the attorney general and reporter has jurisdiction as provided by law.

(b) Any investigator so designated shall, while on such active duty in the affected jurisdiction, have the same authority as is provided by law for any full-time criminal investigator employed by the district attorney general.

(c) The authority conferred by this section shall be in addition to any authority otherwise conferred by law upon the attorney general and reporter.