Section 16A(9)(a) in Maintenance of Internal Security Act, 1971
(a)the grounds on which an order of detention is made or purported to be made under Section 3 against any person in respect of whom a declaration is made under sub-section (2) or sub-section (3) and any information or materials on which such grounds or a declaration under sub-section (2) or a declaration or confirmation under sub-section (3) or the non-revocation under sub-section (4) of a declaration are based, shall be treated as confidential and shall be deemed to refer to matters of a State and to be against the public interest to disclose and save as otherwise provided in this Act, no one shall communicate or disclose any such ground, information or material or any document containing such grounds, information or material;