However, there was no casualty or injury in the incident, they further said.

The fire broke out in the operation theatre number two of the Advanced Cardiac Centre (ACC) of the Post Graduate Institute of Medical Education and Research (PGIMER).

Initial investigation suggested that the fire originated from a spark in the pendant socket of the operation theatre.

"Due to the ongoing surgical procedures, the OT was occupied at the time of the incident. The patient was immediately shifted safely to the adjacent CTVS (cardiothoracic and vascular surgery) ICU to ensure the safety and uninterrupted care," said a PGIMER statement.

Later, the fire was put out.

"The PGIMER authorities have already initiated necessary measures to address the situation. The engineering wing has dispatched a team of experts to assess the damage and commence the restoration work," said the statement.

Senior functionaries from the institute's administration immediately reached the spot to assess and expedite the restoration process, it said.

In October last year, the PGIMER witnessed fire incidents at its Advanced Eye Centre and Nehru Hospital building.