Nigeria's presidency has said "killings across a number of communities" have occurred in its a central state as a report suggested 86 people had died in clashes between mostly Muslim herders and Christian farmers.

Nigerian president Goodluck Jonathan conceded defeat in the country’s election, paving the way for an unprecedented peaceful transfer of power.

Nigerian president Goodluck Jonathan has called challenger Muhammadu Buhari to concede and congratulate him on his electoral victory, the country’s aviation minister said.

Nigeria has extended voting to tomorrow after problems occurred as millions turned out to vote in a presidential election that analysts say is too close to call between President Goodluck Jonathan and former military dictator Muhammadu Buhari.