ACCRA (Reuters) - Ghana's President John Mahama called opposition leader Nana Akufo-Addo to concede defeat in Wednesday's national election, a senior aide to Akufo-Addo told Reuters on Friday.


The concession will quell uncertainty at the end of a day in which independent voting tallies showing an Akufo-Addo victory were broadly accepted.


The electoral commission has said it will announce official results by Saturday.


(Reporting by Matthew Mpoke Bigg; editing by John Stonestreet)