An Italian court on Wednesday acquitted energy groups Eni and Shell of $1.1-billion corruption charges related to an oil exploration deal in Nigeria in the biggest corruption scandal in the industry. Africa News reports that the long-running case concerns the 2011 purchase by Eni and Shell of a giant offshore oilfield in Nigeria estimated to hold nine billion barrels of crude which prosecutors allege the companies paid bribes to secure. The ruling, which comes three years after the trial kicked off and after over 74 hearings, left the Nigerian government disappointed and considering whether to appeal.