Former US secretary of state John Kerry has stepped into the Kenyan election controversy with an impassioned plea to opposition leader Raila Odinga to stay within the law when protesting against the results.
Kenyan opposition leader, Raila Odinga, has alleged that the electoral commission's servers had been hacked in order to sway early election results in favor of incumbent, Uhuru Kenyatta, ensuring that the current president remains in charge of the country.
Mudavadi's claims echoed similar accusations tabled by Odinga on Wednesday when he described the counting process as a "sham" and said hackers had broken into the tallying systems and interfered with the results.
At least three people have been shot dead in election violence in Kenya, as the country awaits the results of Tuesday's poll.
The public website of the electoral commission (IEBC), which is publishing results as they stream in electronically from polling stations, shows Kenyatta with 8.1 million votes ahead of Odinga with 6.7 million.
He therefore called on all with questions on the conduct of the election to exercise restraint and await an account from the - Independent Electoral and Boundaries Commission (IEBC), stressing the imperative need for the IEBC to give a detailed account of the process. Problems with electronic voting in the closely contested 2013 election led to accusations the vote was rigged.
The opposition says its calculations show Odinga beating Kenyatta by a margin of more than 600,000 votes.
The Intergovernmental Authority on Development (IGAD), the African Union, the European Union and the African Electoral Observation Group had earlier said the election was credible.
"We have our results and they don't match what IEBC is streaming on their portal", he said. "This time we caught them", he tweeted.
"I wish to take this opportunity to confirm that our elections management system is secure".
According to CNN, Kerry is now co-leading the Carter Center's mission of election observers in Kenya, and is working on bringing that country's election to a peaceful close.
His comments were made amid repeated calls for calm.
A police officer at the scene, who spoke on the condition of anonymity due to restrictions over speaking to the media, said two people were killed during the riots.
Rioting broke out in the south-western city of Kisumu, an ODM stronghold, with protesters mounting street barricades and clashing with police.
Opposition candidate Raila Odinga, whose rejection of the 2007 presidential election result triggered widespread bloodshed, has challenged the results released so far.