William Ruto declared winner of Kenyan presidential vote amid chaos at election center - CNN

The IEBC's vice chair Juliana Cherera was among those who disagreed with the results but provided no evidence of irregularities.

Earlier Monday, Ruto's rival Odinga's coalition also rejected the election results before they had even been announced by Kenya's Independent Electoral and Boundaries Commission (IEBC).

Odinga's chief agent Saitabao Kanchory told the press outside the national election center in Nairobi that they had not yet been able to cross check the final result with their own tally.

"Once we see them, we want to verify them, when we verify them, we will be able to know and to tell the Kenyan people, because a result that is not verifiable is not a result.'' Kanchory told reporters awaiting the results announcement.

The people of Kenya are the biggest winners," he said

He expressed his "gratitude" to Kenyan citizens "who refused to be boxed into tribal cocoons."

He also thanked his competitor and veteran opposition leader Raila Odinga, and said: "We dwelled on issues and tried to sell an agenda to the people of Kenya during the campaign."

"It was God that brought us here ...

Live images showed scores protesting the election results, tires on fire and smoke billowing in the air.

Odinga's running mate Martha Karua also took to Twitter following the results announcement and said: "It is not over till it is over."

The 'hustler-in-chief'

Analysts had predicted a win for Odinga, given his performance in opinion polls and the support he enjoyed from outgoing President Uhuru Kenyatta.