National EFCC Arrests Former NNPCL CFO Umar Isa Over Alleged ₦11.17 Trillion Refinery FraudBy Adejuyigbe FrancisJune 24, 20250 EFCC Arrests Former NNPCL CFO Umar Isa Over Alleged ₦11.17 Trillion Refinery Fraud. The Economic and Financial Crimes Commission (EFCC)…