
As finance minister and coordinator of the economy, Mrs. Okonjo-Iweala played a leading role in 2014 when PwC as hired, as the government tried to counter an allegation that $20 billion oil money had been stolen.
Former Central Bank governor, Lamido Sanusi, who made the claim, accused the Nigerian National Petroleum Corporation, NNPC of diverting the money.
After efforts by the government and the Senate to reconcile the sum yielded no tangible results, Mrs. Okonjo-Iweala recommended an independent forensic audit. She later announced the hiring of PriceWaterHouseCoopers.