(2)A transfer of audit working papers or other documents held by statutory auditors or audit firms to the competent authorities of a third country reflects a substantial public interest related to carrying out independent public oversight. Accordingly, any such transfer by the competent authorities of Member States should be made solely for the purpose of the exercise of the competences of public oversight, external quality assurance and investigations of auditors and audit firms by the competent authorities of the third country concerned. The persons employed or formerly employed by competent authorities of the third country that receive the information are subject to obligations of professional secrecy.