South African President, Jacob Zuma failed in his appeal against a court ruling that corruption charges against him be reinstated.

Friday's ruling puts further pressure on Zuma after a damning constitutional court judgment against him in March, and comes six weeks before local elections at which the ruling African National Congress faces a strong challenge from opponents seeking to capitalise on what they see as his missteps.

The court said Zuma and National Director of Public Prosecutions Shaun Abrahams, who had appealed against the earlier ruling alongside the president, had no grounds to do so.

"The matter is of course important for Mr Zuma. However if the appeal does not have reasonable prospects for success, leave to appeal should not be granted," Judge Aubrey Ledwaba said.

It was not immediately clear if Zuma would appeal Friday's ruling, but legal analysts said both he and the National Prosecuting Authority (NPA) could still lodge a petition to the Supreme Court of Appeal.Ledwaba had in April ordered a review of a 2009 decision by the NPA to drop 783 corruption charges against Zuma, which he described in his ruling as "irrational". That decision by the NPA allowed Zuma to run for president the same month.

The High Court's decision at the time was based on phone intercepts presented by Zuma's legal team that suggested the timing of the charges in late 2007 may have been part of a political plot against Zuma.

The hundreds of corruption charges against Zuma relate to a major government arms deal in the late 1990s.
Zuma said in April that a government investigation into the arms deal had found no evidence of corruption or fraud but critics denounced the findings as a cover-up. (Aljazeera)

*Photo shows Jacob Zuma.