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The department of telecommunications and postal services says President Jacob Zuma's daughter Thuthukile was appointed chief of staff after consideration of her "capacity" for the position and nothing else.
Spokesperson Siya Qoza says in a statement that her appointment is consistent with the rules and regulations governing the appointment of people in government ministries.
The Mail & Guardian reported earlier today that 25 year-old Zuma had landed the job of chief of staff in the ministry.
According to the newspaper, Thuthukile Zuma "may have made history as South Africa's youngest head of a minister's office", and will earn almost R1 million a year.
She has an honours degree in anthropology from the University of the Witwatersrand.