Ghana's President Nana Akufo-Addo has been re-elected

Ghana's President Nana Akufo-Addo has been re-elected after a tightly contested election on Monday. 

Mr Akufo-Addo obtained 51.6% of the vote, compared with 47.4% won by his main rival, ex-President John Mahama, official results showed. 

Mr Mahama has not yet conceded defeat. It was the third time the two politicians had faced each other in a presidential election. 

Ghana has a reputation for being one of the most stable democracies in Africa.