"I am ready to face defamation charges if the allegations against Robert Vadra are proven wrong. Why is the Congress silent on the merits of the case?" Kejriwal said.
His remarks came a day after he and lawyer Prashant Bhushan alleged that Vadra had bought property worth crores of rupees between 2007 and 2010 with an "unsecured interest free loan" of Rs 65 crore given by DLF.
The Congress today dismissed the demand for a probe into the allegations and dubbbed the activists as "B Team of BJP".
"An inquiry into what? Is a business transaction between two private entities duly reported to the statutory authorities illegal? Is it a crime?", party spokesman Manish Tewari told reporters here.
Asked about Kejriwal daring Vadra to file a defamation case against him, he said "we do not need advice from such a person who is making charges to further his politics". PTI