A civil action under sections 4-276 to 4-280, inclusive, may not be brought: (1) More than six years after the date on which the violation of subsection (a) of section 4-275 is committed, or (2) more than three years after the date when facts material to the right of action are known or reasonably should have been known by the official of the state charged with responsibility to act in the circumstances, but in no event more than ten years after the date on which the violation is committed, whichever last occurs. If the state elects to intervene and proceed with an action brought under sections 4-276 to 4-280, inclusive, the state may file its own complaint or amend the complaint of a person who has brought an action under sections 4-276 to 4-280, inclusive, to clarify or add detail to claims in which the state is intervening and to add any additional claim under which the state contends that it is entitled to relief. For statute of limitation purposes, any such state pleading shall relate back to the filing date of the complaint of the person who originally brought the action to the extent that the claim of the state arises out of the conduct, transactions or occurrences set forth or attempted to be set forth in the prior complaint of such person.