3. Appointment of Commission.- (1) The appropriate Government may, if it is of opinion that it is necessary so to do, and shall, if a resolution in this behalf is passed by each House of Parliament or, as the case may be, the Legislature of the State by notification in the official Gazette, appoint a Commission of Inquiry for the purpose of making an inquiry into any definite matter of public importance and performing such functions and within such time as may be specified in the notification, and the Commission so appointed shall make the inquiry and perform the functions accordingly :
Provided that where any such Commission has been appointed to inquire into any matter-
(a) by the Central Government, no State Government shall, except with the approval of the Central Government, appoint another Commission to inquire into the same matter for so long as the Commission appointed by the Central Government is functioning;
(b) by a State Government, the Central Government shall no appoint another Commission to inquire into the same matter for so long as the Commission appointed by the State Government is functioning, unless the Central Government is of opinion that the scope of the inquiry should be extended to two or more States.
(2) The Commission may consist of one or more members appointed by the appropriate Government., and where the Commission consists of more than one member, one of them may be appointed as the Chairman thereof.
(3) The appropriate Government may, at any stage of an inquiry by the Commission fill any vacancy which may have arisen in the office of a member of the Commission (whether consisting of one or more than one member).
(4) The appropriate Government shall cause to be laid before each House of Parliament or, as the case may be, the Legislature of the State the report, if any, of the Commission on the inquiry made by the Commission under sub-section (1) together with a Memorandum of the action taken thereon, within a period of six months of the submission of the report by the Commission to the appropriate Government.
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