Liquidators want Khulubuse Zuma and Zondwa Mandela held responsible for the failure of two mines.
The SIU has lodged a R155 million civil claim against Minenhle Makhanya.
The Presidency says the SIU’s corruption probe task is part of a ‘systematic campaign against crime’
Opposition MPs are expected to question the SIU head about upgrades to Nkandla in Parliament today.
The SIU says it will no longer be able to meet its deadline at the end of this month.
The DA's Lindiwe Mazibuko says Zuma is trying to block accountability on the Nkandla issue.