For the second consecutive day during his visit to Kolkata, Vinod Rai, former Comptroller and Auditor General (CAG) of India whose report in 2010 pegged notional loss of Rs. 1.76 lakh crore to the national exchequer due to 2G spectrum allocation in 2008, refused to answer questions on the court's dismissal of the scam as non-existent and former telecom minister A Raja's reported allegation that Mr Rai was a "contract killer" for the BJP.