In no mood to relent, Lt Governor Najeeb Jung on Tuesday rejected the AAP government's decision to transfer Home Secretary Dharam Pal after he signed a notification appointing Joint Commissioner of Delhi Police M K Meena as new Chief of Anti-Corruption Branch.
Pal had issued the order appointing Meena following Jung's directives.
Sources said the LG has declared "null and void" the order transferring Pal. Earlier, government sources said the order was sent to Jung for approval.
The conflict over authority over the bureaucracy has been a major source of confrontation between the AAP government and the LG.
Jung had on Monday appointed Meena superseding Chief Minister Arvind Kejriwal's hand-picked chief SS Yadav. The AAP government had reacted sharply to the decision.
Earlier, an Additional Commissioner-level officer used to head ACB but the LG on Monday had elevated the rank of head of the probe agency from Additional Commissioner to Joint Commissioner.
Meena is currently serving as Joint Commissioner of New Delhi range and the LG's order said he has been given additional charge of ACB.