There have been media reports in the last couple of days that the police are probing a foreign angle in this case.
"These are all speculations, work of fiction," said a senior police official when asked about the media reports.
Delhi Police Commissioner B S Bassi had last Friday said that one should not go by media reports and only believe what is being said officially.
The Police Commissioner has also said that the inquest proceedings are on and they have not reached any conclusion in the case.
Delhi Police have recently begun the investigation once again from scratch and several people, including the staff of the five-star hotel, where Sunanda was found dead, and the personal staff of Tharoor, who was then a Union Minister, have been quizzed in recent days.