"In that case, the 2G scam might not have taken place...This calls for CBI's intervention to investigate the issue," BJP national spokesperson Rajiv Pratap Rudy said here.
The document was filed yesterday by Janata Party leader Subramanian Swamy, the petitioner in the 2G case, before a Supreme Court bench of justices G S Singhvi and A K Ganguly, hearing his application seeking a CBI probe into Chidambaram's alleged role in deciding the price of 2G spectrum allocation.
An office memorandum sent to the PMO on March 25 by the finance ministry, headed by
Pranab Mukherjee, also suggested that Chidambaram and jailed former telecom minister A Raja had jointly determined the price for the 2G spectrum in 2008.
Rudy asked how Chidambaram could side with Raja and allow him to "steal" Rs 1.76 lakh crore from the exchequer.
The BJP had demanded Chidambaram's resignation yesterday.