The chief secretary was allegedly assaulted by a few AAP legislators at Chief Minister Arvind Kejriwal's residence during a meeting last night.
The chief minister's office, however, dismissed the accusation as "bizarre and baseless".
"I don't want to get into individual cases. I have been a civil servant for over 40 years and I have never seen such a behaviour (with an IAS officer).
"I am speaking at a personal level... This type of behaviour should be condemned in the strongest terms," the Housing and Urban Affairs minister told reporters.