Nigerian banks begin to dispense old naira notes after central bank confirmed notes will continue as legal tender until year-end.
INEC prepares for governorship polls amid issues arising from last month's disputed presidential vote.
Electoral body wants more time to reconfigure machines used in last month's disputed presidential vote.
Election commission declared Bola Tinubu winner of presidential election as main opposition parties cry foul .
The election comes amid growing frustrations among citizens, caused in part by shortages of the newly designed currency notes.
