Delhi Police are considering sending viscera samples of former union minister Shashi Tharoor’s wife Sunanda Pushkar, who was found dead in a hotel in January, to forensic laboratories abroad to determine the type of poison that is suspected to have caused her death.

The AIIMS medical board had, in its second report submitted to police recently, confirmed poisoning as the reason behind her death but did not mention the type of poison that caused her death.

They had listed some kind of poisons most of which were radioactive isotopes that cannot be detected by labs in India.

According to a senior police official, police are now mulling sending the viscera samples to a UK-based laboratory which has facilities to test all kinds of poisons.

“With this almost clear that Sunanda died of poisoning, the biggest question which remains in the case is that the kind of poison (used) and how it reached her body. If these questions can be answered, the case could head to its logical end,” the official said on condition of anonymity.

As of now, the police have asked the AIIMS panel of doctors to redo their investigation and name the poison which caused Sunanda’s death but if it fails to do so, the samples will then be sent abroad.

The three mobile phones and a laptop of the deceased have already been sent to a forensic laboratory in Gandhinagar, Gujarat, for investigations to check whether anything was deleted from the gadgets post her death.