The Delhi Police is waiting for the final autopsy report from the All India Institute of Medical Sciences (AIIMS) before proceeding in the investigation of the mysterious death of Sunanda Pushkar, wife of former union minister Shashi Tharoor.

According to police sources, a Delhi Police team, which was formed after Pushkar’s mysterious death on January 17, was still awaiting the final autopsy report from the AIIMS.

Pushkar was found dead in south Delhi’s Leela hotel.

The police had sought the AIIMS’s views after contradictions in the autopsy report submitted to the sub-divisional magistrate and the viscera report which came a few days after the autopsy.

“The final report is awaited,” a police officer said.

AIIMS forensic department head Sudhir Gupta revived the controversy a few days ago by claiming that he was pressurised to write in his post-mortem report that the death was “natural”.

On Thursday, Gupta had said his report was based on the principles and ethics of medicine.

The post-mortem examination which was submitted to the magistrate on June 20 had stated that the cause of death was “sudden” and Pushkar had died of a “drug overdose”. The autopsy also shows “Alprazolam poisoning”.

Meanwhile, the viscera report had suggested “no poisoning” and “no traces of Alprax tablets”.

During investigation, the police had recovered three empty strips of Alprax tablets from the hotel’s room number 345 where Pushkar was found dead.

Sources in AIIMS said the report was delayed due to the internal dispute among doctors on the issue of postings.