(6) The authority making the order shall furnish to the appropriate Review Board all documents relevant to the case unless a certificate, signed by a Secretary to the Government concerned, to the effect that it is not in the public interest to furnish any documents, is produced.
(7) Within a period of twenty-four months commencing on the day of his first detention in pursuance of an order made under a law providing for preventive detention, no person shall be detained in pursuance of any such order for more than a total period of eight months in the case of a person detained for acting in a manner prejudicial to public order and twelve months in any other case:
Provided that this clause shall not apply to any person who is employed by, or works for, or acts on instructions received from, the enemy or who is acting or attempting to act in a manner prejudicial to the integrity, security or defence of Pakistan or any part thereof or who commits or attempts to commit any act which amounts to an anti-national activity as defined in a Federal law or is a member of any association which has for its objects, or which indulges in, any such anti-national activity.
(8) The appropriate Review Board