The Economic and Financial Crimes Commission (EFCC) has named several of Nigeria’s oil moguls and firms as suspects in a multibillion-naira corruption case involving Diezani Alison-Madueke, the former Minister of Petroleum Resources. The EFCC, in a document filed with a motion ex-parte, sought to question Alison-Madueke about her business relationships with Mr. Onajite Okoloko’s Midwestern…