Access to documents containing confidential information is allowed to the parties under investigation whenever such documents constitute evidence of the infringement or contain essential information for the defence of the party concerned. Access may be granted to them but only in respect of such essential information for defence purposes.  Documents containing confidential information may be disclosed to public prosecutors whenever they contain matters which might constitute a crime pursuant to Article 331 of the Code of Criminal Procedure since the officials of the Authority have the obligation to report to the public prosecutor in such cases.