The new head of Nigeria's Central Bank announced his presence by calling for a probe into the health of the country's banking system. An Economic and Financial Crimes Commission investigation initiated by the Central Bank governer, Lamido Sanusi, identified five banks with non-performing loans totalling N1.14trn ($7.4bn). A transparency push of this magnitude, unprecedented for Africa, is a sign that that the new governor takes banking reform seriously, and it could lead to comprehensive sector restructuring.