in the opinion of the State Government, have a bearing on the necessity for the order. ', (d) after sub section (7), the following sub sections shall be inserted, and shall be deemed to have been inserted with effect from the 29th day ' of June, 1975, namely: '(8) In the case of any person in respect of whom a declaration has been made by a State Government under sub section (2) or a declaration has been made by a State Government or an officer subordinate to it or confirmed by the State Government under sub section (3), or a declaration has not been revoked by a State Government under sub sec 19 833 SCI/76. 258 tion (4), the Central Government may, whenever it considers it necessary so to do, require the State Government to furnish to the Central Government the information and materials on the basis of which such declaration has been made or confirmed, or not revoked as the case may be, and such other information and materials as the Central Government may deem necessary.