New Delhi, May 13 (UNI) The Central Bureau of Investigation (CBI) grilled former ISRO chairman G Madhavan Nair in connection with the controversial with Antrix-Devas deal which is said to have causes a massive loss to the government. Antrix Corporation, the commercial arm of the ISRO had signed an agreement with Devas Mulitimeda, a private company formed by former ISRO employees and venture capitalists from the US for supply of S band transponsers on two ISRO satellites for a price much lower than the market price. The CBI had registered a case against the then Executive Director, Antrix Corporation Limited, Bengaluru; two officials of US-based company; Bengaluru-based private multi media company and other unknown officials of Antrix Corporation Limited /ISRO/Department of Space. It was in this case that Mr Nair was today questioned by the CBI for a couple of hours. UNI RG SW 2124