N.Y. Gen. Bus. Law § 342-b

§ 342-b. Recovery of damages by attorney general. In addition to\nexisting statutory authority to bring such actions on behalf of the\nstate and public authorities, the attorney general may also bring action\non behalf of any political subdivision or public authority of the state\nupon the request of such political subdivision or public authority to\nrecover damages for violations of section three hundred forty of this\narticle, or to recover damages provided for by federal law for\nviolations of the federal antitrust laws. In any class action the\nattorney general may bring on behalf of these or other subordinate\ngovernmental entities, any governmental entity that does not\naffirmatively exclude itself from the action, upon due notice thereof,\nshall be deemed to have requested to be treated as a member of the class\nrepresented in that action. The attorney general, on behalf of the\nstate of New York, shall be entitled to retain from any moneys recovered\nin such actions the costs and expenses of such services.\n