"Vadra's land deals have the blessings of Sonia Gandhi and her son Rahul Gandhi, the Congress vice president," BJP leader Ravi Shankar Prasad said in a press conference here.
"Both Sonia Gandhi and Rahul Gandhi should explain Vadra's land deals which generated huge profits for him," he added.
A documentary on Vadra's land deals that helped him build a Rs. 300 crore empire "unscrupulously" was released to the media.
"If an investigation is carried out, there would be multiple criminal cases in Vadra's name," Prasad said.