Niger opposition leader Mahamane Ousmane has claimed that he narrowly won the country’s presidential election, as fresh violence erupted a day after official results gave victory to his rival by a wide margin. Also on Wednesday, Moumouni Boureima, a former chief of staff of the armed forces, was arrested at his home, accused of leading the disturbances after the election result was announced. Al Jazeera reports that Boureima is reportedly close to Hama Amadou, the man who had been expected to be the most formidable opposition candidate in the election. Amadou was however banned from running because of a conviction for baby trafficking – a charge he says was politically motivated – and threw his support behind Ousmane.