16 CFR § 310.7 - Actions by states and private persons.
(a) Any attorney general or other officer of a State authorized by the State to bring an action under the Telemarketing and Consumer Fraud and Abuse Prevention Act, and any private person who brings an action under that Act, must serve written notice of its action on the Commission, if feasible, prior to its initiating an action under this part. The notice must be sent to the Office of the Director, Bureau of Consumer Protection, Federal Trade Commission, Washington, DC 20580, at tsrnotice@ftc.gov and must include a copy of the State's or private person's complaint and any other pleadings to be filed with the court. If prior notice is not feasible, the State or private person must serve the Commission with the required notice immediately upon instituting its action.
(b) Nothing contained in this Section shall prohibit any attorney general or other authorized state official from proceeding in state court on the basis of an alleged violation of any civil or criminal statute of such state.