Mr Vadra also hinted that he may take legal action - he said the allegations made against him are "utterly false, entirely baseless and defamatory." (Read full statement)
But Mr Kejriwal continued the war of words and asked Mr Vadra to clarify the charges against him. "Vadra has not responded to specific questions asked by us... Vadra should come in the open and clarify charges against him," he said. "We all live in a democracy and some genuine questions are raised by us. The son-in-law of the most powerful person in the country should address the issue and he is not doing it and is shooting the messenger," he added.
Mr Kejriwal and Mr Buhshan launched an anti-graft political party last week. In a press conference on Friday, Mr Kejriwal and Mr Bhushan had alleged that real estate giant DLF had gifted Mr Vadra a 65-crore interest-free loan and sweetheart deals on a series of apartments in Gurgaon.
Though they did not offer evidence, they said DLF gave Mr Vadra's Skylight Hospitality Private Limited hugely discounted flats in return for favours from the Congress, which they claimed ranged from rushed clearances and permissions to allowing DLF to build commercial projects on land acquired for public interest.
Union Agriculture Minister Sharad Pawar, whose party the NCP partners the Congress at the Centre and in Maharashtra, slammed Mr Kejriwal yesterday, and asked why is he not going to court. "This has become fashion... Instead of demanding Special Investigation Team (SIT) from the government, Kejriwal should go to court and file a criminal case against him if Vadra did anything wrong... He should prove what he has said," Mr Pawar said. (Read more)
Mr Kejriwal, who spent most of Sunday meeting people in Delhi on the issue of inflated electricity bills, has said that his team will give a detailed response, possibly today, after they study the clarifications sent by Mr Vadra and DLF. Mr Kejriwal, who had said earlier that he should be sued if his charges are found incorrect, said that DLF's statement was "full of half-truths and lies" but did not elaborate.
The activists' accusations against Mr Vadra have been derided by the Congress and snatched by the BJP to demand an investigation. Mrs Gandhi, sources said, has instructed her party leaders to staunchly defend her son-in-law. They have obliged. The party line is that the activists have misrepresented facts to try and damage the Congress' credibility ahead of elections in major states like Gujarat and Karnataka. Home Minister P Chidambaram today said, "Unless there is specific allegation of quid pro quo, government can't probe private deals."
Get Breaking news, live coverage, and Latest News from India and around the world on NDTV.com. Catch all the Live TV action on NDTV 24x7 and NDTV India. Like us on Facebook or follow us on Twitter and Instagram for latest news and live news updates.