Tenn. Code Ann. § 8-6-407: Confidentiality of writings, records or tangible objects obtained by attorney general

(a) All testimony, books, documents, or other writings, records or tangible objects obtained by the attorney general and reporter pursuant to §§ 8-6-401 and 8-6-402 shall be confidential and shall not be publicly divulged by the office of the attorney general and reporter except in the discharge of the duties of the office or in legal proceedings in which the state is a party.

(b) All other documentary material, answers to written interrogatories, and transcripts of oral testimony that are voluntarily provided to the attorney general and reporter as part of an investigation under this part must be treated as if obtained pursuant to a demand issued under this part if said materials were obtained pursuant to an investigative demand or similar process issued by another state or federal attorney general or law enforcement agency, obtained from a state or federal attorney general or law enforcement agency pursuant to a statutory obligation to produce, or provided by a person with information relevant to the subject matter of the investigation.