Police have launched a manhunt for the so-called ringleader behind the booing of Grace Mugabe on Saturday.
An appeal has been launched to find Magura Magura Charumbira, the 34-year-old police say led the “disruption” as Mrs Mugabe spoke on stage in Bulawayo.
The incident is said to have upset her husband, President Robert Mugabe, and eventually led to the toppling of his long-time ally Emmerson Mnangagwa from his role as vice-president.
Mr Charumbira, who had previously said he was linked to a faction said to support Mr Mnangagwa, had already been expelled from his local party.
Zanu-PF Bulawayo provincial chairman Cde Dennis Ndlovu told the state-run Herald newspaper:
It emerged that from the small clique which tried to disrupt the rally, the majority of them were people from outside the province, particularly the Midlands and Masvingo. They were brought in buses and coordinated by expelled party members that included Charumbira.”