Section 29. Upon failure to file a statement, report or affidavit within ten days after receiving notice under section twenty-eight, the city or town clerk, as the case may be, shall notify the director thereof and shall furnish him with copies of all papers related thereto and the director, if satisfied there is cause, shall assess a penalty pursuant to the provisions of section three. If any statement filed with the city or town clerk, as the case may be, discloses any violation of any provisions of this chapter, such city or town clerk shall notify the attorney general thereof and shall furnish him with copies of all papers relating thereto. The attorney general shall examine every such case referred to him by such clerk. If satisfied that there is cause, he shall, in the name of the commonwealth, institute appropriate criminal or civil proceedings or refer the case to the proper district attorney for such actions as may be appropriate. Any city or town clerk shall at any time upon the request of the attorney general or the director forward any evidence or information received by such clerk to the attorney general or director for whatever action the attorney general or director deems appropriate pursuant to law.