New Delhi, (JPN/Bureau): Giving big jolt to the Central government, Central Bureau of Investigation (CBI) director AP Singh categorically told Parliament's Public Accounts Committee (PAC) that there was no loss to the exchequer in the 2G spectrum scam, contradicting Communications Minister Kapil Sibal’s stand that estimated losses in the CAG report on the issue were utterly erroneous.

PAC chairman Murli Manohar Joshi is assigned to speak to Lok Sabha speaker Meira Kumar in connection with the remarks of Sibal slamming the CAG's report on the 2G spectrum. The PAC members hurled a blizzard of questions to the CBI director, who appeared before the panel on Tuesday.

Singh told the panel that it would be wrong to say from the progress in the case so far that there was zero loss owing to 2G spectrum scam.

The CBI director's remarks contradict those of Sibal last month that the estimated loss of Rs 1.76 lakh crore arrived at by the Comptroller and Auditor General (CAG) was "utterly erroneous and without any basis".

Joshi said the CBI director told the PAC members that the agency was focused more on the criminal investigation in the 2G spectrum case, which was its main mandate and he could not say much about the quantum of loss to the exchequer. However, Singh pointed out the exchequer incurred loss of whopping Rs 50,000 crore.

Asked if former Communications Minister Arun Shourie will be asked to appear before the PAC, Joshi said it will depend on the facts told by the CBI to the committee.

"The CBI has called him (Shourie) February 21. After talking to him, they will keep the facts before the panel. The PAC will look into it and the members will take a decision on that basis," he said.

To a question about Prime Minister Manmohan Singh's offer to appear before the PAC, Joshi said his letter is with the PAC. "If a decision is taken, you will come to know," he said.

He said the Prime Minister's Office had provided a lot of information and more queries have been forwarded.

On the possibility of summoning Sibal, he said a decision will be taken by the PAC members.