RJD leader Lalu Prasad today rallied behind Congress president Sonia Gandhi's son in-law Robert Vadra and charged Indian Against Corruption (IAY) activist Arvind Kejriwal with indulging in 'character assassination' of Priyanka Gandhi and her huband.

"Kerjiwal is indulging in character assassination of Priyanka Gandhi and her husband Robert Vadra by charging the latter with amassing huge wealth through alleged corrupt means," he told reporters in reply to a question.

"It has become a habit of the IAC activist to level sensational and baseless allegation against prominent people for mileage," Lalu said, adding that the former should know that the Vadras were rich people before becoming relatives of the Gandhi family.