New Delhi: Stepping up offensive, Lt Governor Najeeb Jung today termed as "unconstitutional" the orders by Chief Minister Arvind Kejriwal asking officers to put up files directly to Ministers, asserting that some directives by AAP regime have tended to "obfuscate" the special position that Delhi has as the national capital.

In a letter to Kejriwal, Jung also told him that all the appointments made by the AAP government without his approval in the last four days were not valid, insisting that he was the sole authority in matters of ordering transfer and posting of bureaucrats.