The Aam Aadmi Party had said that the appointment of the new CAG was unconstitutional since Sharma was joint secretary, additional secretary, director general (acquisition) and defence secretary in the defence ministry since 2003.

After initially deeming his appointment unconstitutional, lawyer and Aam Aadmi Party leader Prashant Bhushan has now filed a public interest litigation (PIL) in the Supreme Court questioning the appointment of Shashi Kant Sharma as the new Comptroller Auditor General (CAG).

The fresh petition has been filed on behalf of former Chief Election Commissioner N Gopalaswami, former chiefs of Naval Staff Admiral (retd) R H Tahiliani and Admiral (retd) L Ramdas, former Deputy CAG BP Mathur and five other retired bureaucrats.

The petition has sought setting aside of Sharma's appointment contending that it was made arbitrarily and "without any system for selection, without any selection committee, any criteria, any evaluation and without any transparency".

In their petition, the nine petitioners, have also sought a direction to the Centre to "frame a transparent selection procedure based on definite criteria and constitute a broad-based non-partisan selection committee, which after calling for applications and nominations would recommend the most suitable person for appointment as CAG".

Their petition stated they had filed an RTI application on February 21, 2013 "seeking information as to what is the system of appointment, whether there is any selection committee, what is the zone of consideration, what are the criteria, etc" and added that the response given by Director in the Ministry of Finance of May 2013 "clearly shows there is no search committee, no criterion, no system, no call for applications or nominations and is therefore arbitrary 'pick and choose'."

One of the several grounds raised in the fresh plea filed today, is that during his tenure as DG (Acquisitions) or as the Defence Secretary, Sharma cleared several major defence purchases some of which have turned out to be a source of embarrassment to the Centre.

The defence deals referred to in the petition include procurement of 12 VVIP choppers from Anglo-Italian firm AgustaWestland for the Indian Air Force at a cost of Rs 3,500 crore, which according to Italian investigators involved kickbacks of at least Rs 350 crore.

Another defence contract cleared during Sharma's tenure as DG (Acquisitions) was the conversion of Russia's discarded warship Admiral Gorshkov into a full modern aircraft carrier, renamed INS Vikramaditya, originally scheduled to be delivered by August 2008 at a total cost of USD 947 million and the cost of which has "shot up" to $2.9 billion with the vessel still not delivered, the petition said.

The Tatra truck deal, which erupted into a major scam, was also cleared by Sharma, the petition said.

The petition submitted these major defence acquisitions made over the last few years were cleared by Sharma and now as CAG if he audits these expenditures, it would lead to a conflict of interest as he would be auditing the defence purchases he himself sanctioned.

The petition also contended that as CAG he can't recuse himself from the auditing process as there no such provision under the Constitution or the CAG Act and also since the CAG is a single-member body and if he recuses himself an audit won't be possible.

The petition also claimed that the apex court's judgement dismissing the appointment of Central Vigilance Commissioner P J Thomas applies to this case as well.

The petitioners included Kamal Kant Jaswal, Ramaswamy R Iyer, E A S Sarma, all former secretaries in various government ministries and also S Krishnan, former Indian Audits and Accounts Service officer and M G Devasahayam, former IAS officer.

PTI