Investigators may summon Tharoor for the lie-detector test in connection with Sunanda Pushkar's death, reported Times of India.
The media report surfaced at a time when investigators have been questioning everyone afresh. Bajrangi and Narain Singh, Tharoor's driver and domestic help respectively, were grilled once again.
Family friends of the Tharoors, Sanjay Dewan too was summoned and questioned by the investigators.
According to reports, police have also been questioning a few chemists in Lodhi Colony on information provided by the suspects to find the source of the Alprax tablets found in Sunanda's room.
The mystery over Sunanda Pushkar death continues. Supporting the findings by AIIMS, FBI report too concluded that the death of Sunanda Pushkar was due to poisoning.
Earlier Shashi Tharoor said, "Let me say this for the last time, I will not comment on this matter, as a matter of policy as well as principle, until the police have concluded investigation."
"Once the police have done so, come to a conclusion and presented it to a court, I will have plenty to say. But till then it will be wrong to do so and I will not do so," he added.