CBI is still awaiting advice of the Attorney General in the case of alleged irregularities in awarding extra spectrum to Airtel and Vodafone after difference in opinion over whether a case against the telecom giants was made out or not.

While a group of officials believed a case against the two telecom companies was made out as they were only beneficiaries of the laid down policy, another team of officials differed, official sources said on Monday.

The matter, therefore, was referred to the Attorney General for his opinion who is yet to give any opinion, the sources said, adding CBI would file a charge sheet in the case only after getting the opinion of the top law officer of the government.

The agency, in its FIR, had alleged the two companies had entered into a criminal conspiracy which resulted in a loss of over Rs 500 crore to the state exchequer.

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