a forensic report conducted by KPMG to be published. The audit, commissioned by the Ministry of Finance following concerns over the NNPC's transparency, detailed the NNPC's sharp business practices, violation of regulations, illegal deductions of funds belonging to the state, and failure to account for several billions of naira that should go to the federation account. Auditors found that between 2007 and 2009 alone, the NNPC over-deducted funds in subsidy claims to the tune of N28.5 billion. It has not been able to account for the sum ever since. Willbros Group Inc In May 2008, Willbros Group Inc, a US company, admitted to making corrupt payments totalling over $6.3 million to officials at the NNPC and its subsidiary NAPIMS, in return for assistance in obtaining and retaining contracts for work on the Eastern Gas Gathering System (EGGS). ABB Vetco Gray In July 2004, ABB Vetco Gray, a US company, and its UK subsidiary ABB Vetco Gray UK Ltd, admitted to paying over $1 million in bribes to officials at NNPC subsidiary NAPIMS in exchange for obtaining confidential bid information and favourable recommendations from Nigerian government agencies. Trafigura and Vitol In November 2013 after a report was published by Swiss Non-governmental advocacy organisation – Erklärung von Bern – allegations of heavy fraud surfaced, placing the NNPC under suspicion of siphoning off $6.8 billion in crude oil revenues. Unremitted funds (2013–2014) On 9 December 2013, a letter from the Central Bank of Nigeria Governor, Sanusi Lamido Sanusi to the President of Nigeria, Goodluck Ebele Jonathan, dated show of 25 September 2013 details that the NNPC had not remitted over $49.8 billion proceeds of crude oil sales to the Government surfaced. On 13 December 2013, NNPC responded that no money was missing. Reconciliation Committee (comprising representatives of (i) CBN (ii) NNPC (iii) DPR (iv) FIRS (v) OAGF (vi) The Budget Office of the Federation (vii) Federal Ministry of Finance (viii) Federal Ministry of Petroleum Resources) was set up. The Reconciliation Committee estimated unremitted funds at $10.8bn on 18 December 2013 while CBN changed its claim to $12bn. CBN then informed senate committee on Finance on 4 February 2014 that NNPC needs to account for $20bn as the CBN could only confirm receipt of $47bn out of $67bn revenue for the period under review. The then Finance Minister recommended the conduct of an independent Forensic Audit and PwC was officially appointed by the office