CBI Chief Ranjit Sinha has said that noted lawyer Prashant Bhushan cannot claim immunity from disclosing the name of a "whistle blower" who provided him the list of visitors to his official residence and demanded that he reveal his source.

In his affidavit filed before the Supreme Court in response to the plea of Bhushan that Sinha be removed from the 2G scam probe in the wake of his allegations that he met accused and officials of accused companies at his residence, the agency chief said it is not open to the lawyer to argue his case without disclosing the source from which he got the details of the visitors mentioned in their affidavit.

He had filed this affidavit yesterday in response to plea of Bhushan, counsel for an NGO, Centre for Public Interest Litigation, seeking his removal from 2G spectrum scam probe.