New Delhi: A war of words has broken out between the ruling Congress party and the main opposition Bharatiya Janata Party (BJP) on the second generation (2G) spectrum allocation scam.

Soon after Union minister Manish Tewari blamed former Comptroller and Auditor General (CAG) Vinod Rai for damaging the Indian economy through his “flawed" presumptive loss calculation of 1.76 trillion in the 2G spectrum scam, senior leaders of the BJP have alleged that Prime Minister Manmohan Singh was involved in preparation of the draft report of the Joint Parliamentary Committee (JPC) through the officials of Prime Minister’s Office (PMO), finance ministry and department of telecom.

“They were all involved in preparing the draft report," said Yashwant Sinha, a member of JPC and former finance minister. BJP leaders also alleged the language of the draft report was questionable and the JPC report was not prepared by the secretariat of JPC. Sinha also alleged that the Union government had deliberately manipulated the second auction of 2G spectrum in March this year.

The ruling Congress party had managed to get the draft JPC report adopted on 27 September by a majority vote. The opposition members had opposed the draft report because it absolves the Prime Minister and finance minister P. Chidambaram. BJP submitted its 36 page dissent note to the JPC chairman on Thursday.

Senior BJP leaders also argued that while former ministers in the regime of the National Democratic Alliance (NDA), Jaswant Singh and Arun Shourie, were questioned by the Central Bureau of Investigation (CBI), none of the officials of PMO and finance ministry were called for questioning by the investigating agency.

A. Raja repeatedly offered to appear before JPC. Arun Jaitley, Sushma Swaraj, Yashwant Sinha and Arun Shourie had offered to appear before JPC. We have always maintained that Prime Minister and finance minister should have been asked to appear before JPC," said Ravi Shankar Prasad, senior BJP leader and member of JPC.

BJP’s members of the JPC blamed the Congress-led government for degrading and demanding the JPC, which is considered to be the “investigation authority of the Parliament".