Harare, Zimbabwe (CNN) -- The only leader that the independent Zimbabwe has ever known will be at the helm for another five years, following an election that pitted 89-year-old President Robert Mugabe against his longtime foe, Prime Minister Morgan Tsvangirai. Mugabe was elected to his seventh term as president with 61% of Wednesday's vote, the head of the country's Election Commission said Saturday. Tsvangirai, who won 34%, according to the election commission, has alleged widespread fraud and was quick to promise a court challenge. "A fraudulent and a stolen election has plunged Zimbabwe into a constitutional, political and economic crisis," said Tsvangirai, 61.
@highlight
Tsvangirai to challenge the results in court
@highlight
African Union gives its blessing, despite noting shortcomings
@highlight
Problems included voters getting turned away and biased media, they say
@highlight
U.S. says it doesn't believe results "represent a credible expression" of the people's will
"In light of substantial irregularities reported by domestic and regional observers, the @placeholder does not believe the results announced today represent a credible expression of the will of the Zimbabwean people," Kerry said.