Joshi, who heads Parliament's Public Accounts Committee (PAC), offered to resign if allegations against him can be proved.
The allegation by R P 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 Rs. 1.76 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 Rs 2645 crore and he had signed the report containing Rs 1.76 lakh crore loss on the orders of his superiors.
There were charges and counter charges between BJP and and the Congress and the Union Ministers latched on to Singh's claims to attack BJP and Joshi.
Congress President Sonia Gandhi waded into the row when she said that BJP has been exposed by the comments of the former CAG official.
"Yes, certainly I think so," she said when reporters asked her whether BJP stood exposed by the 'revelations' of Singh.
Joshi hit back saying the official's charge was part of a conspiracy and campaign to malign institutions like CAG and PAC.
"I think Congress has been exposed instead. Those who adviced her to make the statement stand exposed. R P Singh had raised the issue earlier too. Why did she not speak out then," Joshi told reporters reacting to Gandhi's comments.
He also said that it was Singh who had made a Power Point presentation before PAC on CAG's report on 2G issue. "He never raised the issue then," Joshi said. (MORE)
