Joshi, who heads parliaments Public Accounts Committee (PAC), offered to resign if allegations against him can be proved.
The allegation by RP Singh, former Director General, Post and Telecommunications at CAG, that he was told to sign on the 2010 audit report to parliament that had estimated a loss of R1.76 lakh crore on account of spectrum sale also resurrected the controversy over the basis for such findings. Singh has claimed that he had estimated a loss of only R2645 crore and he had signed the report containing R1.76-lakh-crore loss on the orders of his superiors.
There were charges and counter-charges between the BJP and and the Congress and the Union Ministers latched on to Singhs claims to attack BJP and Joshi. Congress president Sonia Gandhi waded into the row when she said that the BJP has been exposed by the comments of the former CAG official.