The Zanu PF Twitter account claims that Emmerson Mnangagwa has been made an interim leader of the party
The 75-year-old was sacked from his post as vice-president for what the government called "traits of disloyalty".
At the time, his removal was seen as making it more likely that President Mugabe's wife, Grace, would follow in her husband's footsteps as leader of Zimbabwe.
She had earlier called on her husband to remove his vice-president.
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