Simon Matsvara and his mother Ethel Vhangare fled their home in Pote Village, Mashonaland Central province when members of their church group discovered she was expecting another child.
Just four years ago the pair, whose ages are unknown, were fined by village elders after Mrs Vhangare suffered a miscarriage.
Village chief Chinamhora said the community had been outraged by the claims and he has dispatched aids to hunt the mother and son down.
He told the state-owned Herald newspaper: ‘We are going to hunt for the two and we will punish them severely to send a clear message to would-be offenders that we do not tolerate such acts.’
Village sources claimed the pair started their incestuous relationship in 2008 after relatives assigned him to help care for his father Agripah, who had suffered a stroke. Agripah later died.
When details of the first pregnancy emerged, the family was fined by village elders and ordered to break off the relationship.
Mrs Vhangara’s new pregnancy became obvious to the community after she started skipping church.
Neighbours visited her home to check she was not sick and allegedly discovered she was five months pregnant.
The incestuous couple then fled their home, fearing they could be targeted by the community.
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