Prosecutors had accused Diezani Alison-Madueke of receiving cash and luxury services from industry executives between 2011 and 2015 in exchange for preferential treatment Former Nigerian Petroleum Minister Diezani Alison-Madueke has been cleared of all six bribery charges by a UK court, ending a long-running prosecution on allegations she received luxury benefits in exchange for preferential treatment in obtaining oil contracts during her time in office. The verdict, delivered on Wednesday at