New Delhi: Congress President Sonia Gandhi visited Union Minister of State for Human Resource Development Shashi Tharoor`s residence to pay condolences for his wife Sunanda Pushkar`s sudden demise. Sunanda Pushkar was found dead at a luxury hotel in the capital on Friday night. Her death comes a day after the Twitter scandal allegedly involving her, husband Shashi Tharoor and a Pakistani journalist Mehr Tarar.