Former Public Enterprises Minister Pravin Gordhan has been admitted to hospital, his family has said.
A brief statement on Tuesday evening, issued on behalf of the former minister's family, said he was receiving "the best available medical care". It did not give further details of his condition.
"The family has requested privacy during this difficult time," it read.
Updates would be given in due course, the statement added.
In March, Gordhan announced that he would be retiring after the May election.
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