When the auditor concludes, after appropriate discussion and investigations, that a matter which has come to the auditor's attention gives rise to a statutory duty to make a report the auditor shall2 bring the matter to the attention of the regulator as soon as practicable in a form and manner which will facilitate appropriate action by the regulator. When the initial report is made orally, the auditor shall make a contemporaneous written record of the oral report and shall confirm the matter in writing to the regulator.