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Annette Kennealy, 51, was founded with multiple wounds to the body on her land in Limpopo province. Colonel Moatshe Ngoepe, a police spokesman, said: “Family members tried to call her without success, until one of them went to investigate. “On arrival he found the deceased inside the house.”

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The victim was staying with an employee on her farm in the town of Louis Trichardt when she was attacked.

A friend is said to have found her body lying in a pool of blood.

Ian Cameron, head of the Community Safety division of AfriForum, a group that represents the rights of the white Afrikaner minority, said Ms Kennealy had been attacked with a hammer and iron rod.

Ms Kennealy was a former councillor with the opposition Democratic Alliance party.