ANC presidential candidate Jacob Zuma on Tuesday said he was a victim of a "systematic abuse of power", but stressed he was not above the law.

African National Congress (ANC) president Jacob Zuma was officially free of his corruption charges on Tuesday.

ANC president Jacob Zuma will appear in the Durban High Court on Tuesday for its endorsement of the NPA's withdrawal of the charges against him.

Indictments were served on the Lotter double murder accused on Friday and the matter was transferred to the Durban High Court.

A durban court was packed with journalists on Wednesday ahead of the state's application for leave to appeal against Judge Chris Nicholson's ruling.

A campaign to prevent arms currently aboard a Chinese ship from reaching Zimbabwe gained momentum on Monday with trade unions calling on their counterparts not to allow the vessel to dock at any African port. The Congress of South African Trade Unions called for an international boycott of the vessel.

The vote recount in a number of constituencies in Zimbabwe following March 29 elections is futile because ballot boxes have been tampered with, a South African member of the Southern African Development Community observer team said on Monday.

A ship that was carrying weapons and ammunition destined for Zimbabwe lifted anchor and sailed from Durban less than an hour after the Durban High Court ordered that its controversial cargo cannot be transported across South Africa to that country.

The documents the state is seeking to obtain from Mauritius may never be used against African National Congress president Jacob Zuma, the Constitutional Court heard on Thursday. State advocate Wim Trengove said evidence gathered "does not automatically become evidence before the court".

There is no statute determining exactly what provisions should be in a search warrant, the Constitutional Court heard on Tuesday as African National Congress president Jacob Zuma and French arms company Thint began a last-ditch bid to prevent key documents from being used against them.