The IEBC has insisted that its systems have not been hacked, while its chairman, Wafula Chebukati, on Thursday said Mudavadi's printout was riddled with arithmetic errors and came from a Microsoft database while the commission's systems run on Oracle.
Odinga rejected the early results of Tuesday's vote and said the details were "fake", because the authorities had failed to present documents verifying the results, BBC reported. "The streets do not".
Official results from Tuesday's presidential election show incumbent Uhuru Kenyatta taking about 54% of the vote, around 11 percentage points ahead of Mr Odinga, who on Wednesday alleged the elections were a "fraud" as a result of the hacking of the electoral board's computers.
Violence broke out following the elections in 2007, when people were attacked with machetes and had their homes burned. While Odinga, who's lost three previous presidential elections, has asked his supporters to remain calm, he's said he has no power over their actions.
Mr Odinga said that the hackers gained access to the Independent Electoral and Boundaries Commission (IEBC) computer system by using the identity of the commission's IT manager, Chris Msando, who was killed last month.
She praised the IEBC for conducting a thorough and transparent electoral process, but said she wouldn't comment on allegations of hacking. He claimed both elections were rigged.
Global observers have given the election a broad thumbs up.
Though there are eight presidential candidates on the ballot, Kenyatta and Odinga are the leading candidates in the race that appears too close to call.
Head of the EU's election mission Marietje Schaake confirmed Kerry's assessment of the voting, and said she had seen "no signs of centralized or localized manipulation".
A man seeking safety walks with his hands in the air through a thick cloud of tear gas toward riot police, as they clash with protesters throwing rocks in the Kawangware slum of Nairobi, Kenya, on Thursday.
The IEBC said it will announce the results by noon local time if all the validation from the polling station results are done.
Odinga posted 50 pages of computer logs online to support his hacking claims, but they were "inconclusive", according to Matt Bernhard, who studies computer security in election systems at the University of MI.
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