Indiana Code Title 36. Local Government § 36-9-32-9

(1) either at law or in equity, by suit, action, or other proceeding, protect and enforce any and all rights of such owner of bonds or trustee under state law, or, to the extent permitted by law, under the trust agreement, or under any loan agreement entered into under this chapter;  and

(2) enforce and compel the performance of all duties required by this chapter or by any trust agreement or loan agreement entered into under this chapter to be performed by any municipality or by any officer of any municipality.