W. BROOME, JJ. : The ten petitioners in this case have formed themselves into an association for the development of a residential colony in Ghaziabad (district Meerut). In accordance with the directions given to them by the authorities from time to time they revised their layout plan and it was eventually sanctioned by the Prescribed Authority established under the U.P. Regulation of Building Operations Act 1958. The sanction was conveyed to the petitioners In a letter dated 30-8-1962; but on 6-9-3962 another letter was addressed to the petitioners by the Prescribed Authority, informing them that the Government had stayed the operation of the sanction; and eventually on 3-10-1962 the Prescribed Authority informed the petitioners that the sanction was withdrawn. In the present petition the petitioners ask for a writ of certiorari to quash the orders dated 6-9-1962 and 3-10-1962, staying and withdrawing the sanction that has been granted on 30-8-1962, and for a writ of mandamus commanding the opposite parties (the State of U.P., the Land Acquisition Officer, the Prescribed Authority and the Controlling Authority of the Ghaziabad Regulated Area, the Improvement Trust of Ghazi