"It is shocking and outrageous that the ANC's in-fighting and power struggle has landed us in this trouble," said Mulder.

"What is even worse is the fact that it has been done with millions of rands of taxpayers' money."

Mulder said it is of great importance to note that the NPA is still convinced of the merit of its case against Zuma.

"It is, however, ironic that the NPA prosecution of Zuma is now being stopped in order to restore the credibility of the NPA after gross irregularities by the former head of the NPA, advocate Leonard McCarthy, in a total abuse of power and actions which is in contradiction to the Constitution and specifically section 179(4) which determines that the NPA has to exercise its functions 'without fear, favour or prejudice'."

Mulder said it is inconceivable as to how the NPA could for eight years with great diligence put so much energy into and spend so much taxpayers' money in Zuma's case, to now suddenly decide not to continue.

"It appears as if the South African public has the whole time been taken for fools while the NPA was abused to sort out internal ANC fights."

Mulder said according to calculations between R60-million and R100-million of taxpayers' money has been spent to investigate Zuma's case and more than R10-million was used to assist with his defence.

"The decision not to prosecute Zuma further will inevitably seriously reflect on the credibility and ability of the NPA," he said.

"It appears that the decision not to prosecute him, is based upon the interference of certain political individuals such as Bulelani Ngcuka and not necessarily based upon new evidence of the charges against Zuma."

Mulder said the core question is ? what interest did Ngcuka have in this, and what is behind Ngcuka?

"The credibility of the judicial authorities in South Africa is directly tied to the credibility of the NPA," said Mulder.

"The FF Plus believes now more than ever that an independent judicial commission of inquiry, consisting of three senior Appeals judges, has to be appointed to not only investigate the arms deal but also to look into what had happened at the NPA."

Mulder said such a commission will propose possible prosecutions or disciplinary steps in order to prevent a similar situation from ever happening again.

"It is the only way in which the NPA will be able to repair its credibility and integrity. We have definitely not heard the last word about this unfortunate saga," he said.