A few days after the election on 30 August 2009, it was announced that he had won the election with 42% of the vote, and that result was promptly confirmed by the Constitutional Court. The opposition rejected the official results, and riots broke out in Gabon's second largest city, Port-Gentil. In response to allegations of fraud, the Constitutional Court conducted a recount before again declaring Bongo the winner with 41.79% of the vote on 12 October 2009; he was then sworn in as President on 16 October. Various African presidents were present for the ceremony. Bongo expressed a commitment to justice and the fight against corruption at the ceremony and said that fast action was needed to "give back confidence and promote the emergence of new hope". He also alluded to his father's governing philosophy of preserving stability through regional, tribal, and political balance in the allocation of power, while also stressing that "excellence, competence and work" were even more important than "geographical and political considerations". Later in the day, he announced the reappointment of Paul Biyoghe Mba as Prime Minister; he made the announcement personally "to underline the importance of this moment". According to Bongo, Biyoghe Mba had the necessary experience and managerial competence "to lead us through the next stage", and he said work would start "immediately".