law: Prevention of Black Marketing and Maintenance of Supplies of Essential Commodities Act, 1980
  14. Revocation of detention orders
  (1) Without prejudice to the provisions of section 21 of the
  
  General Clauses Act, 1897 (10 of 1897), a detention order may at any time, be
  
  revoked or modified-
  (a) notwithstanding that the order has been
  
  made by an officer of the State Government, by the State Government or by the
  
  Central Government;
  (b) notwithstanding that the order has been
  
  made by an officer of the Central Government or by a State Government, by the
  
  Central Government.
  (2) The revocation or expiry of detention order shall not bar
  
  the making of a fresh detention order under section 3 against the same person
  
  in any case where fresh facts have arisen after the date of revocation or
  
  expiry on which the Central Government or a State Government or an officer, as
  
  the case may be, is satisfied that such an order should be made.