Mo. Rev. Stat. § 29.221
2. The auditor shall receive and initially review reports of allegations of improper governmental activities of state agencies, political subdivisions, or state or political subdivision officers or employees within the scope of authority set forth in this section, including misappropriation, mismanagement, waste of resources, fraud, or violations of state or federal law, rule or regulation. After conducting an initial review, the auditor may investigate those allegations the auditor deems to be credible. When the auditor believes that an allegation of improper governmental activity is outside the authority set forth in this section, the auditor shall refer the allegation to the appropriate state agency responsible for the enforcement or administration of the matter for investigation. When the auditor believes that an allegation of improper governmental activity involves matters set forth in this subsection, those matters shall be referred as follows:
(L. 2013 H.B. 116)