Ariz. Rev. Stat. § 44-2123
A. In the course of conducting an audit to which this article applies, if the independent certified public accountant detects or becomes aware of information indicating that an illegal act, whether or not perceived to have a material effect on the issuer's financial statements, has or may have occurred, the independent certified public accountant, in accordance with generally accepted auditing standards, as modified or supplemented by the commission, shall:
B. After determining that the audit committee or board of directors is adequately informed pursuant to subsection A, as soon as practicable, the independent certified public accountant shall report the accountant's conclusions to the board of directors if the independent certified public accountant concludes that all of the following have occurred: