JUDGMENT :

Gajendragadkar, CJI.

Mr. K. Ananda Nambiar, who is a Member of Parliament, has been detained by the Government of Madras since the 30th December, 1964. On the 29th December, 1964, an order was passed under Rule 30(1)(b) and (4) of the Defence of India Rules 1962 in which it was stated that the Government of Madras were satisfied with respect to the petitioner K. Ananda Nambiar that with a view to preventing him from acting in any manner prejudicial to the Defence of India and the public safety, it was necessary to make an order directing that he be detained. The said order further directed that the petitioner should be arrested by the police wherever found and detained in the Central Jail, Tiruchirapalli. Though this order directed the detention of the petitioner in the Central Jail, Tiruchirapalli, it is common ground that he has been detained in fact in the Central Jail, Cuddalore. By his present Writ Petition (No. 47 of 1965) filed under Article 32 of the Constitution, the petitioner challenges the validity of the said order of detention mainly on two grounds. He contends that Rule 30(1)(b) under which the impugned order has been passed is invalid, and in the alternativ