The DA wants an order substituting the decision with one rejecting Zuma's application for medical parole.
It also seeks an order directing that Zuma be returned to prison to serve the remainder of his sentence.
DA leader John Steenhuisen said Fraser's decision to grant Zuma parole was unlawful for two reasons.
“First, on a proper interpretation of the [Correctional Services] act and the regulations, the commissioner is precluded from granting medical parole if the board recommends that an inmate not be granted medical parole,” he said.
Steenhuisen said, alternatively, the commissioner's decision was materially influenced by an error of law in believing that he was entitled to grant medical parole when the board had concluded that Zuma was not ill enough to warrant it.
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