Former South African president Jacob Zuma has been admitted to hospital and is undergoing tests for an unknown ailment, says JG Zuma Foundation spokesperson Mzwanele Manyi.

“[Former] president Jacob Zuma is in hospital as we speak. Doctors are running tests, but they don’t have test results as yet. He is under strict observation,” Manyi added.

He was speaking shortly after Zuma’s corruption trial was postponed to 17 May.

Zuma’s reconsideration application related to the Supreme Court of Appeal’s dismissal of his “special plea” efforts to force the removal of prosecutor Billy Downer.

Manyi said that he would update the public, but would not give details regarding which hospital Zuma was in.

“He is not even at home, he is in hospital. I will not say which hospital because that is a security issue. We will give updates as it unfolds.”