Gandhi spent around six-seven minutes at Shashi Tharoor's Lodhi Estate residence.
Other prominent political leaders who visited Shashi Tharoor included Defence Minister A K Antony, Overseas Indian Affairs Minister Vayalar Ravi and former Delhi Chief Minister Sheila Dikshit.
Congress leaders Ambika Soni, Ahmed Patel, Mukul Wasnik, Rajiv Shukla and Ashwani Kumar were also among the leaders who went to Shashi Tharoor's residence.
52-year-old Sunanda Pushkar was found dead in a 5-star hotel in South Delhi last night in mysterious circumstances. Sunanda Pushkar and Shashi Tharoor were at the centre of a raging row when reports emerged that she was upset over reported text and tweet messages between her husband and Mehr Tarar, a Pakistani journalist.