Zimbabwe's opposition faced a midnight deadline today to mount a court challenge to the results of presidential elections marked by allegations of fraud and followed by a government crackdown.
Mnangagwa, who is seeking to reverse Zimbabwe's economic isolation and attract desperately needed foreign investment, had vowed the elections would turn a page on Robert Mugabe's repressive 37-year rule.
International monitors largely praised the conduct of the election itself, although EU observers said that Mnangagwa, a former Mugabe ally, benefitted from an "un-level playing field" and some voter intimidation.
Chamisa has called the election results as "falsified and inflated" to ensure Mnangagwa won.
The MDC must lodge its appeal at the Constitutional Court by the end of today -- seven days after the results were announced.
A court clerk told AFP that the MDC had until midnight (2200 GMT), although the court closes at 4:00 pm.
He said the party had evidence "for the purposes, not just of mounting a credible and sustainable challenge, but that will yield a vacation of the entire process." - Courts favour ruling party?
Analysts say that the legal challenge has little chance of success given the courts' historic tilt towards the ZANU-PF, which has ruled since independence from British colonial rule in 1980.
But the court action could delay Mnangagwa's inauguration, scheduled for Sunday.
The polls' aftermath has been marred by allegations of a crackdown on opposition members, including beatings and arrests.
On August 1, soldiers opened fire on MDC protesters, killing six people and sparking an international outcry.
Also today, lawyers for senior opposition figure Tendai Biti asked judges to throw out charges against him over the protests against alleged election fraud, in a case raising further international concern about the new government.
He faces charges of inciting the protests last week by proclaiming victory for the opposition.
"Zimbabwe faces a terrible threat from a group of people that has no respect for the law," Biti, who was granted bail yesterday, told the court.
Mnangagwa wrote on Twitter that Biti was released after he intervened personally in the case.
The Zimbabwe Human Rights Commission, established under the 2013 constitution, today released a damning report into the post-election crackdown.
It said it had received numerous complaints of intimidation, often by men in military uniform, of voters thought to have backed the opposition.
"The ZHRC has established that there is hunting down and harassment of polling agents for independent candidates and opposition political parties," it said.
In a joint statement yesterday, the EU, US, Canadian and Australian missions to Zimbabwe urged authorities to guarantee Biti's safety and human rights.
They said they were "deeply disturbed by continuing reports that opposition supporters are being targeted by members of the Zimbabwean security forces".
The president, the ZANU-PF party and the electoral commission have denied all charges of cheating.
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