New Delhi: The Special Investigation Team is set to now probe the murder case of Sunanda Pushkar, 52, wife of former Union minister Shashi Tharoor, who was found dead at a five-star hotel room in Chanakyapuri area of New Delhi.

According to reports, the investigation is expected to focus on a puncture mark found between Pushkar’s index and middle fingers.

Delhi Police Commissioner Bhim Sain Bassi on Wednesday said that all necessary cross-questioning would be done.

Read: Sunanda Pushkar death case: Shashi Tharoor is shocked

“A special investigation team has been set up which will be closely monitored by DCP South, Additional DCP South, one inspector and SHO. As far as questioning is concerned, whatever is necessary will be done,” he said.

On Tuesday, the Delhi police filed a murder case against unknown persons, confirming she had died of “poisoning.”

This triggered demands for the Congress MP’s resignation.

Read: Sunanda Pushkar was murdered by poisoning, says Delhi police

Earlier, Bassi also said that the death was unnatural, but the substance and its quantum were still not clear.

“Stunned” by this development, Mr Tharoor, is likely to be questioned soon in connection with Sunanda’s death.