New Delhi: The CBI will oppose in the Supreme Court on Friday the pleas of Essar Group and Loop Telecom challenging the jurisdiction of a special court which took cognisance of the charge sheet against them in the case arising out of the agency's probe into the 2G spectrum scam.

The agency, in its reply to the notice issued on February 15, had said that the apex court was empowered to ask the special court to hear the case of the two companies even if they were not charged under the Prevention of Corruption Act (PCA).

A bench headed by justice G S Singhvi had issued notices to CBI and others asking them to file their responses within two weeks on the companies' plea in which they have said since corruption charges have not been made against them under the PCA, their case is triable by a magistrate and not a special court.

The bench, during the last hearing had said, "We would quash the proceedings if we come to the conclusion that the court has no jurisdiction to hear the case."

It had asked representatives of the companies and their promoters to appear before the trial court which had issued summons to them.

NGO Centre for Public Interest Litigation (CPIL) and others, who had filed the petition in the apex court on the 2G spectrum scam, are also respondents in the case.

The two telecom firms, in their petitions, had said they have been named in the charge sheet under section 420 (cheating) and 120B (criminal conspiracy) of the IPC and the charges were triable by a magistrate and not by the special court constituted under the Prevention of Corruption Act for hearing the 2G case.

Other accused named in the third charge sheet are Essar group promoters Anshuman and Ravi Ruia along with Loop Telecom promoters Kiran Khaitan, her husband I P Khaitan and Essar Group Director (Strategy and Planning) Vikash Saraf.

The companies and their promoters have denied any involvement in the scam.