Internal Audit is part of the management control system in an organisation. It is an internal appraisal service, established by the management of an organisation, which reviews the internal control system. It should objectively examine, evaluate and report on the adequacy of internal control as a contribution to the efficient and effective use of resources. The internal audit function should provide an unrestricted range of coverage of the organisation's operations. The internal auditors should have sufficient expertise as well as authority to allow them free and unrestricted access to such assets, records and personnel as are necessary for the proper fulfilment of their responsibilities and to report to the board where they feel it is necessary.