Johannesburg - A lawyer for Afriforum said if the National Prosecuting Authority (NPA) failed to take action to prosecute Grace Mugabe and seek her extradition to South Africa, the advocacy group would start proceedings against the former Zimbabwean first lady.
"The ball is in their court now," Willie Spies said, adding that Afriforum had argued that Grace Mugabe committed the attack on Johannesburg model Gabriella Engels while she was on a private visit to South Africa and therefore did not qualify for diplomatic immunity.
The Johannesburg High Court on Monday overturned a decision by the government to grant Grace Mugabe diplomatic immunity after she was accused of whipping Engels with an electric cord.
Last August Engels filed a court application challenging the government's decision.
Grace Mugabe returned to Zimbabwe immediately after South Africa granted her diplomatic immunity, allowing her to evade prosecution for assault and causing a row in which the DA also challenged the ruling.