Video - Votes being counted in Nigeria's delayed vote

Vote-counting is under way in Nigeria after Saturday's presidential election. Incumbent President Muhammadu Buhari is seeking a second term, in what's thought to be a tight race with former Vice President Atiku Abubakar. The electoral commission extended voting hours in some places where polling stations opened late and ballot machines malfunctioned. Now, many Nigerians are watching election officials closely to make sure there is no vote-rigging. Emotions remain high and there are fears that a disputed result could lead to violence.