This is because the two sub-sectors that created problems for the five banks taken over by the Central Bank of Nigeria were in the oil and gas sector and the capital market (specifically margin loans). Incidentally the affected banks were opening their books to these sectors for the first time.
However, it is difficult to say anymore at this juncture that we are preemptively adjusting the degree of accommodation, since inflation has now exceeded 5 percent, and major central banks are reacting to inflation by normalizing their monetary policy rapidly and aggressively.