He has denied any foul play, and his supporters in the Congress Party, which now leads India’s opposition, have dismissed the case against him as politically motivated, saying the governing party was threatened by Mr. Tharoor and was trying to ruin his reputation.
In a blast of Twitter messages on Monday, he called the charges “preposterous.”
“No one who knew Sunanda believes she would ever have committed suicide, let alone abetment on my part,” he said. “If this is conclusion arrived at after 4+ yrs. of investigation, it does not speak well of the methods or motivations of the Delhi Police.”
He added that officials had said in October that they had not found “anything against anyone & now in 6 months they say that I have abetted a suicide. Unbelievable!”
Police officials did not respond to several calls for more information.
Tall, handsome and unnervingly self-confident, Mr. Tharoor, 62, is a regular on the Delhi dinner party circuit. He has a commanding voice, a rich Oxbridge accent and a huge vocabulary.
In his social media posts, he loves to sprinkle in a few 25-cent words such as “farrago” or even “snollygoster.” When he sweeps into a room, wearing his silk scarves and beautifully tailored suits, heads turn.