Central Bureau of Investigation (CBI) Director AP Singh on Tuesday appeared before the Joint Parliamentary Committee (JPC) probing the 2G spectrum scam.
According to reports, Singh made a presentation before the JPC members on the CBI''s investigation into the scam.
He also briefed the JPC on the CBI''s ongoing investigation into the buyout of Aircel.
The developments came after Comptroller and Auditor General (CAG) Vinod Rai appeared before the committee last week.
The CAG, in a report to Parliament in November last year, had pegged presumptive loss to the exchequer on 2G spectrum allocation at Rs. 1.76 lakh crore.
The report said that the 2G spectrum was allocated to new players at throwaway prices. It also talked about undue advantage given to some firms and the spectrum allocated beyond contracted quantity to 9 firms.
The CAG report also said that the Department of Telecom (DoT) did not follow its own practice of first come first serve
Former Telecom Minister A Raja was forced to resign from the Union Cabinet last year after the CAG faulted him for undervaluing spectrum to favour companies, who were largely ineligible for 2G spectrum.
According to the chargesheet filed by the CBI, the loss to the exchequer is pegged at 30,984 crore rupees.