(5)As auditors and audit firms of Community companies which have issued securities in Canada, Japan or Switzerland, or which form part of a group issuing statutory consolidated accounts in those countries are regulated under the domestic laws of those countries, it should be decided whether the competent authorities of Member States may transfer audit working papers or other documents held by statutory auditors or audit firms to the competent authorities of those countries solely for the purposes of the exercise of their competences of public oversight, external quality assurance and investigations of auditors and audit firms.