The official was removed from office last month as part of an investigation into alleged corruption and fraud.

Brazil's Federal Public Ministry claimed to have discovered "strong evidence" of overbilling, misappropriation of public funds and embezzlement".

Four of Nunes' allies, including former vice-president Luiz Soares, were also ordered to be removed from office as part of the probe.

The CBDA have denied any wrongdoing, and claimed they were not given a chance to explain the alleged financial irregularities.

The organisation postponed all competitions and salaries following the suspensions, but all five officials have now been allowed to return.

Brazilian newspaper Globo reported that CBDA lawyer Marcelo Franklin had been successful with an injunction at the São Paulo court.

He also called for a review by the Federal Public Prosecutor and provided "thousands of pages" of documents to support the CBDA's cause.

Nunes, who has been in office since 1988, is also a member of the ruling Bureau of the International Swimming Federation (FINA).

FINA claimed to have made an "immediate request" to the CBDA for more information on his removal.

The governing body vowed not to make a decision on whether he will be suspended from his position or become the source of an Ethics Committee investigation until this has happened. 

Seventy-eight-year-old Nunes had claimed that he was the victim of a campaign by rivals planning to replace him as President.

Other allegations against him include that funds designated to buy airline tickets and equipment for the Brazilian Olympic team had been misused. 

If proved this would be a clear violation of the FINA Code of Ethics which all serving officials have to fulfil.

Section D on integrity stipulates that "no official shall, directly or indirectly, solicit, accept or offer any concealed remuneration, commission, benefit or service of any nature connected with their participation in aquatics or with their function as an official".