The Supreme Court today asked the CBI to explain on what basis it took decision not to oppose the bail plea of of DMK MP Kanimozhi and four others in the trial court in 2G scam.

A bench of Justices G S Singhvi and H L Dattu asked the Additional Solicitor General Haren Raval to make a statement before it tomorrow in this regard after it was pleaded by other accused in the case that the investigating agency should also treat them on equal footing as far as bail is concerned.

The court was hearing bail pleas of five corporate honchos who pleaded that they should be released as there is no chance of them tampering with the evidence.

The investigating agency, however, opposed the bail plea of corporate executives - Unitech Wireless' MD Sanjay Chandra, Swan Telecom's Director Vinod Goenka and Reliance Anil Dhirubhai Ambani group's executives Hari Nair, Gautam Doshi and Surrendra Pipara - who have approached the apex court for bail.

Earlier the agency on October 24 did not oppose the bail plea of Kanimozhi, Kalaignar TV MD Sharad Kumar, directors of Kusegaon Fruits and Vegetables Asif Balwa, Rajiv Agarwal and Bollywood producer Karim Morani before a special CBI court here.

It had, however, opposed bail plea of Swan Telecom promoter Shahid Balwa and former telecom minister A Raja's ex-private secretary R K Chandolia in the trial court.

Other accused in the case include Raja, former telecom secretary Siddhartha Behura and three telecom firms Reliance Telecom Ltd, Swan Telecom and Unitech (Tamil Nadu) Wireless Ltd.

All the accused have pleaded that they have not done anything wrong and refuted the charge of drawing illegal benefits in allocation of 2G spectrum.