That sub section reads as follows: "(9) Notwithstanding anything contained in any other law or any rule having the force of law (a) the grounds on which all 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 in formation 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 arc based, shall be treated as confidential and shall be deemed to refer to matters of State and to be against the public inter est to disclose and save as otherwise provided in this Act, no on shall communicate or disclose any such ground, information or material or any document containing such ground, information or material;" the argument urged on behalf of the detenus was that sub section (9) (a) of section 16A should be read down and construed so as not to exclude the power of the High Court in the exercise of its jurisdiction under Article 226 to call for the grounds, information and materials on which the order of detention is made and the declaration under sub section (2) is based with a view to satisfying itself as regards the legality of the detention.