"No one who knew Sunanda believes she would ever commit suicide, let alone abetment on my part".
Tharoor and Pushkar got married on August 22, 2010.
Tharoor dismissed the charges on Twitter and said he would fight them.
Sunanda was found dead in a posh hotel room in Delhi on Jan 17, 2014. It was the third marriage for both of them.
Following this, the autopsy report suggested that Pushkar may have died after overdosing on drugs. However, a few injury marks were also found on her body that made the authorities believe that it may not have been a suicide.
News 18 says the chargesheet concluded that Pushkar killed herself and hence no one has been charged with murder.
The couple became embroiled in controversy over a series of Twitter messages before Ms Pushkar's death that appeared to reveal Mr Tharoor was having an affair with a Pakistani journalist. The incident took place on the night of January 17, 2014. In April 2014 the Central Forensic Science Laboratory in Hyderabad had denied that poisoning was the cause before making a U-turn seven months later after being asked to do a second test.
The same day, the case was transferred to the Delhi Police Crime Branch. "The matter now is sub judice", said Special Commissioner of Police (Traffic) and chief spokesperson Dependra Pathak.
February 2015: Her viscera samples were sent to the Federal Bureau of Investigation (FBI) lab in Washington.
BJP Rajya Sabha MP Subramanian Swamy said that all witnesses and documents in the case were destroyed during the Congress-led United Progressive Alliance (UPA) rule by the "corrupt" police. Nalini Singh told the cops that Sunanda Pushkar had asked her to retrieve BBM (BlackBerry Messenger) messages between her husband Shashi Tharoor and Mehr Tarar. He said that he would contest it "vigorously" and has questioned the flip-flop of the investigations.
The initial post mortem said her death was due to poisoning. Though officially the Congress strongly protested the chargesheet and blamed the Delhi Police for acting under the instructions of the BJP leadership, party sources admitted that there was little escape for the high-profile politician and former diplomat from law.
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