After issuance of the detention order on the basis of the representation or any other materials, it can be revoked on merit as made on a mistake of fact etc. All such revocation orders have also to be made under Section 11. It is true that for other reasons like continuation of the detention order is not necessary etc. also can be revoked under Section 11. The detention order also can be modified. In this case, revocation order was made before making a reference to the Advisory Board. It is true that if a person is detained, immediately the matter has to be referred to the Advisory Board and the Advisory Board is bound to submit the report within eleven weeks from the date of detention. If the order of detention is revoked on the basis of the report of the Advisory Board, it will come under category No (i). Thereafter, SAFEMA proceedings cannot continue. If the revocation order is passed after sending reference to the Advisory Board under section 8, but, before opinion is received, it will come under category No. (ii). But, if the revocation order is issued even before sending the matter to the Advisory Board, it will come under category No. (iii). such revocation order under category Nos. (ii) and (iii) can be passed only under section 11 of COFEPOSA. The contention of the appellants is that here the revocation order was passed before the matter was sent to the Advisory Board and the matter will come squarely under category No. (iii). According to the Competent Authority, sicne the revocation order is passed after long delay, it need not be considered and considering the objects of the Act, such revocation order need not be looked into. In other words, we have to import a word, we have to import a word that „if