Jonathan declared Nigeria poll winner
Goodluck Jonathan has emerged as a clear winner in Nigeria's presidential poll, with the electoral commission saying he received about 57% of the votes cast.
Rioting spread across the Muslim north, the opposition's powerbase, as the outcome became clear.
International observers have said the election was reasonably free and fair, but supporters of Mr Jonathan's main rival, Muhammadu Buhari, allege ballot-rigging.
18 Apr 2011