Conn. Gen. Stat. § 4-277

(b) A copy of the complaint and written disclosure of substantially all material evidence and information the person who brings such action possesses shall be served on the state by serving the Attorney General in the manner prescribed in section 52-64 . The complaint shall be filed in camera, shall remain under seal for at least sixty days and shall not be served on the defendant until the court so orders. The court, upon motion of the Attorney General, may, for good cause shown, extend the time during which the complaint remains under seal. Such motion may be supported by affidavits or other submissions in camera. Prior to the expiration of the time during which the complaint remains under seal, the Attorney General shall: (1) Proceed with the action in which case the action shall be conducted by the Attorney General, or (2) notify the court that the Attorney General declines to take over the action in which case the person bringing the action shall have the right to conduct the action.

(c) If the court orders the complaint to be unsealed and served, the court shall issue an appropriate order of notice requiring the same notice that is ordinarily required to commence a civil action. The defendant shall not be required to respond to any complaint filed under this section until thirty days after the complaint is served upon the defendant.

(d) If a person brings an action under this section, no person other than the state may intervene or bring a related action based on the facts underlying the pending action.