Mont. Code § 30-14-703
Any stockholder or creditor of a mining or oil company as heretofore provided in 30-14-701 through 30-14-704 who has bona fide reason to believe that the provisions of 30-14-701 through 30-14-704 have been violated may complain relative thereto to the attorney general of the state, the county attorney of the county in which the property is located, or the state securities commissioner, and it shall be incumbent upon the officers mentioned to make a complete investigation of the records and affairs of said corporation or corporations. In the event the facts disclose the violation of the provisions of 30-14-701 through 30-14-704, it shall be the duty of the officer to prefer charges against the officers and directors of the corporation or corporations involved.
§ 30-14-703, MCA