law: Prevention of Black Marketing and Maintenance of Supplies of Essential Commodities Act, 1980
  13. Maximum period of detention
  (1) The maximum period for which any person may be detained in
  
  pursuance of any detention order which has been confirmed under section 12, shall
  
  be six months from the date of detention:
  PROVIDED that nothing contained in this section shall
  
  affect the power of the appropriate government to revoke or modify the
  
  detention order at any earlier time.