Mauritian Attorney General Rama Valayden has formally objected to a request by ANC President Jacob Zuma to withhold information from investigators in South Africa, the SABC reported on Thursday.

The evidence relates to his impending fraud, corruption and money-laundering trial.

Zuma travelled to Mauritius earlier this month for talks with the Office of the Attorney General.

Former special advisor to Prime Minister Navin Ramgoolam, Dinesh Ramjettun, told the broadcaster that to date no indication had been given by the AG's office or the anti-corruption office on the decision taken.

"Yes, the case came up in the morning in the chamber and the Attorney General and the... anti-corruption bureau office objected to the request made by Mr Zuma, therefore the judge has requested the Attorney General's office and the [anti-corruption bureau] office to submit the affidavit by 7 March when the case is to come up again, to say why we are objecting to the request made by Mr Zuma," Ramjettun said.

No indication had yet been given on the reasons for the decision.

"No, there is no indication... the reasons have not been given which is why we have to put everything in the affidavit; in the forthcoming affidavit," he said.

With acknowledgements to Sapa.