The CBI on Monday conducted raids at the premises of former Telecom Minister Dayanidhi Maran after registering a case against him in connection with the controversial Aircel-Maxis deal.

The agency has also booked his brother Kalanidhi Maran, Maxis owner T Ananda Krishnan, senior executive Ralph Marshall and three companies Aspro, Maxis and Sun TV in the case on charges of criminal conspiracy under IPC and Prevention of Corruption Act.

After registering the case, the agency carried out searches at the premises of Maran brothers in Delhi and Chennai.

“CBI has registered case against Maran brothers, Ralph Marshall and T Anandkrishnan and three companies under section 120b of IPC read with 13(2) with 13 (1)(d) and also section 7 and 12 of the Prevention of Corruption Act. Case was registered on 9th October.

Searches were conducted at Delhi and Chennai,” CBI spokesperson Dharini Mishra said in New Delhi.

It has been alleged by former Aircel Chief C Sivasankaran that Maran as the then Telecom Minister favoured Maxis-group in the takeover of his company and in return investments were made by the company through Astro network in Sun TV owned by Maran family.

The CBI, in its recent status report to the Supreme Court, had said that during Maran’s tenure there was “deliberate delay” to provide letter of intent to Sivasankaran.