Nigerian President Muhammadu Buhari has been re-elected for a second four-year term.
Election officials said the former military dictator had defeated his main rival, former Vice President Atiku Abubakar, with a margin of just under four million votes.
Buhari secured 15.1 million votes, while Abubakar of the People's Democratic Party (PDP) received 11.2 million, with voter turnout at a meagre 35.6 per cent.
The opposition has rejected the results, claiming voter fraud and irregularities.

At least eight die, 18 missing after ferry capsizes off North Cyprus
Rescuers battle floods and debris as Himalayan disaster death toll nears 800
Manhunt underway after woman killed, several injured at Swiss shooting
Israeli strike kills two Palestinians, Gaza medics say
