In Kenya, Uhuru Kenyatta has been re-elected as President following Tuesday's election.
After the official announcement, Mr Kenyatta said observers had ensured a "free, fair and credible election".
But in a quick rejoinder, the incoming Nairobi Governor said the opposition leader, who is coming off a presidential election defeat to President Uhuru Kenyatta, has no mandate to make such a declaration.
Kenyatta, son of the country's founding father who in 2013 became Kenya's youngest president, was seeking a second and final five-year term.
Following the announcement of the the Presidential Election in Kenya by the Electoral body which declared incumbent President Uhuru Kenyatta as the victor, violent protests have broken out at the stronghold of his opponent, Raila Odinga.
"We did not find anything deliberately manipulated", said Regina Opondo, the chairwoman of ElOG's steering committee.
The unrest is in areas loyal to opposition leader Raila Odinga, whose party is rejecting the results of Tuesday's (August 8) vote. Like in any competition, there is a loser and a victor.
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Odinga doubled down on his attacks in a speech to 4,000 cheering supporters in Kibera, Nairobi's biggest slum.
Demonstrations have largely taken place in opposition strongholds, but have generated comparisons with the disputed 2007 election which led to two months of ethno-political violence that left 1,100 people dead.
Odinga said the supporters would better stay away from work at least for Monday until he makes his announcement.
Ahead of the results, Mr. Odinga had called on his supporters to remain calm, but added that he did not control anyone, and that "people want to see justice".
Residents of Nairobi slums, and in the western city of Kisumu, threw rocks at police and burned tyres, while officers responded with tear gas and in some cases, live ammunition.
NASA agents Musalia Mudavadi and James Orengo stormed out of a meeting between IEBC officials and all chief presidential agents citing disagreements.