Matter within the purview of this Act to be dealt with under this act only.

On and after the extension of this Act to the Union territory of Dadra and Nagar Haveli and Daman and Diu, no order of detention under the national Security Act, 1980 shall be made by the Administrator or any officer subordinate to him in respect of any bootlegger, drug offender, dangerous person, immoral traffic offender, or property grabber in the Union territory on the ground of preventing him from acting in any manner prejudicial to the maintenance of public order, in so far as an order under this Act, could be made for detention of such person.