 2019  Contract number: [ complete ]  II.24.2 The contractor must keep all original documents stored on any appropriate medium,  including digitised originals if authorised under national law, for a period of five years  starting from the date of expiry of the FWC. II.24.3 The contractor must grant the contracting authority’s staff and outside personnel  authorised by the contracting authority the appropriate right of access to sites and  premises where the FWC is implemented and to all the information, including  information in electronic format, needed to conduct such checks and audits. The  contractor must ensure that the information is readily available at the moment of the  check or audit and, if so requested, that information is handed over in an appropriate  format. II.24.4 On the basis of the findings made during the audit, a provisional report is drawn up.  The contracting authority or its authorised representative must send it to the contractor,  who has 30 days following the date of receipt to submit observations. The contractor  must receive the final report within 60 days following the expiry of the deadline to  submit observations.  II.24.5  In accordance with Council Regulation (Euratom, EC) No 2185/96 of 11 November 1996 concerning on-the-spot checks and inspection carried out by the  Commission in order to protect the European Communities’ financial interests against  fraud and other  irregularities and Regulation (EU, Euratom) No 883/2013 of the  European Parliament and of the Council of 11 September 2013 concerning investigations conducted by the European Anti-Fraud Office, the European Anti-Fraud  Office may carry out investigations, including on the spot checks and inspections, to  establish whether there has been  fraud , corruption or any other illegal activity under  the contract affecting the financial interests of the Union. Findings arising from an  investigation may lead to criminal prosecution under national law. II.24.6  The Court of Auditors has the same rights as the contracting authority, particularly  right of access, for the purpose of checks and audits. The investigations may be carried out at any moment during the provision of the  services and up to five years starting from the payment of the balance of the last  specific contract issued under this FWC.  On the basis of the final audit findings, the contracting authority may recover all or  part of the payments made in accordance with Article II.23 and may take any other  measures which it considers necessary.  39 