Three men and a woman were arrested after attending a ruling ZANU-PF party rally in the country's second city Bulawayo where Grace Mugabe was heckled while addressing the crowd on Saturday.
"There is no compelling reason for denying the accused their rights," said magistrate Franklin Mkhwananzi, ordering them back to court on November 24.
They were freed on $50 bail each and barred from attending a forthcoming presidential rally in Harare, whose date is yet to be announced.
The incident angered Mugabe, 93, who addressed the rally shortly after his wife, accusing his deputy Emmerson Mnangagwa of organising and sponsoring the hecklers.
He vowed to fire Mnangagwa, which he did two days later, in a dramatic move that appeared to open the way for his wife to succeed him in office.
Grace Mugabe could be appointed as one of the country's two vice presidents at the party congress next month.
The arrest of the four ZANU-PF activists came as the Zimbabwe high court Thursday granted bail to Martha O'Donovan, a 25-year-old American journalist charged with charged with insulting Mugabe and attempting to subvert the regime on account of an alleged tweet that described the ageing leader as "selfish and sick".
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