law: 4. Restrictions on privileges and immunities.-
  If it appears to the Central Government that a State which is a party to the Vienna Convention on Diplomatic Relations, 1961 is in breach of its obligations arising thereunder or, that the privileges and immunities accorded to an Indian Mission or members thereof in the territory of any State which is a party to the Vienna Convention on Diplomatic Relations, 1961, are less than those conferred by this Act on the Diplomatic mission of that State or members thereof, the Central Government may, notwithstanding anything contained in this Act, by notification in the Official Gazette, withdraw such of the privileges and immunities so conferred from the diplomatic mission of that State or from members thereof as may appear to the Central Government to be proper.