The Supreme Court on Wednesday sought to know if there was any substance in home secretary GK Pillai's statement that the Radia tapes that had come in public domain were only a "tip of the iceberg".
"We don't know whether it is true or not... or whether he has given an interview at all," a bench comprising justice GS Singhvi and AK Ganguly said during the hearing of the petition seeking the court's monitoring of the investigation into the 2G spectrum scam case.
"Do we assume that the CBI has already transcribed all the tapes," the bench said referring to Pillai's interview to the Wall Street Journal.
Pillai had reportedly said that the real investigation into the tapes related to the money trail of the 2G spectrum scam.
It has been reported that the tapes in public domain was the tip of the iceberg and many more things will come out, the bench said.
Referring to the interview where Pillai said the transcripts of the tapes linked to the 2G investigation were yet to come out, the court asked: "Pillai made statement or not... it has become fashion also that a very senior officer gives interviews thinking it to be in public interest."
The CBI had earlier told the court that it had tapes of about 5,800 conversations between corporate lobbyist Niira Radia and others.
It had said it has prepared the transcripts of only 3,000 conversations.
Solicitor general Gopal Subramanium said "somebody has to go into the veracity of these conversations".
Advocate Prashant Bhushan, representing the petitioner, Centre for Public Interest Litigation which submitted copies of the tapped conversations, however, said "nobody has doubted the veracity of the conversation".
The court has already taken custody of the original tapes recorded by Income Tax department on Pillai's authorisation.