Nigeria's opposition to launch legal challenge after Buhari wins second term

Nigeria’s opposition leader is to mount a legal challenge after President Muhammadu Buhari secured a second term in an election marked both by apathy and violence that claimed hundreds of lives. The electoral commission officially declared Mr Buhari the victor of Saturday’s poll, saying he had won 56 percent of the vote, against 41 percent secured by his main challenger, Atiku Abubakar. But Mr Abubakar insisted he had been cheated of the chance to lead Africa’s most populous st