ETV Bharat. Sourabh Chandrakar, a key promoter of the alleged Mahadev betting app network, has been brought to India from Oman. A Delhi court granted the CBI two days' transit remand as the probe into the. The Central Bureau of Investigation (CBI) has extradited Sourabh Chandrakar, an alleged promoter of the Mahadev App illegal betting syndicate, from Oman and brought him back to India, the agency said.