Parliamentary elections in Nigeria have been postponed until Monday because of organisational problems, officials say. The electoral officials - who have apologised for the delay - say ballot papers have not been delivered in time to many polling stations. The decision is seen as a big blow to the credibility of the electoral body in Africa's most populous country. Some 73m people have registered for the parliamentary, presidential and gubernatorial polls over two weeks.
Security has been high, with borders closed and only election officials, security forces and emergency personnel allowed to drive on roads during voting.Earlier, politicians were urged to put a stop to campaign violence.Amnesty International said at least 20 people had been killed in related attacks and clashes over the last two weeks. A bomb was thrown into a police station in the city of Bauchi on Friday in an apparent attempt to cause panic. No casualties were reported.Police in the Niger Delta also said they had arrested two men driving a minibus filled with assault rifles, ammunition and a rocket launcher.