Murli Manohar Joshi was the Chairman of the Public Accounts Committee (PAC) in 2011 when the committee was investigating the 2G spectrum scam. Pranab Mukherjee was Finance Minister, S.M. Krishna was External Affairs Minister, and P. Chidambaram was in the Home Ministry during that period. The PAC under Joshi played a key role in examining the 2G scam.