Zimbabwe's main opposition leader, Nelson Chamisa, filed a court challenge on Friday against President Emmerson Mnangagwa's election victory, halting Mnangagwa's planned Sunday inauguration.
The first election since Robert Mugabe was forced to resign after a coup in November had been expected to end Zimbabwe's pariah status and launch an economic recovery but post-election unrest has reminded the country of its violent past.
Chamisa's lawyer Thabani Mpofu said he had asked the Constitutional Court to nullify the July 30 vote and that his court application meant Mnangagwa's swearing-in had been halted.
Justice Minister Ziyambi Ziyambi told Reuters Sunday's inauguration "will no longer happen" until the case is finalised.
"On the basis of the evidence we have placed before the court, we seek in the main relief to the effect that the court should declare the proper winner and the proper winner is my client," Mpofu told reporters outside.
"In the alternative, we seek that there be another election which complies with the dictates of the law," Mpofu said. "There is no inauguration that will take place until the matter is determined by the court."
The constitution requires a losing presidential candidate to file any challenge within seven days of a winner being declared.
The Constitutional Court, which can declare a new winner or order a fresh election, must rule within 14 days of an election petition.
Mnangagwa's ruling ZANU-PF party dismissed the legal action.
