BRASILIA, Sept. 3 (Xinhua) -- Brazil's Workers' Party (PT) said Monday it will present an appeal to the Supreme Federal Court in order to guarantee the presidential candidacy of ex-president Luiz Inacio Lula da Silva.

The announcement was made by the party's vice-presidential candidate Fernando Haddad after visiting Lula in prison.

Lula is serving a 12-year jail sentence for corruption and money laundering.

Last week, the majority of Superior Electoral Court (TSE) judges rejected Lula's candidacy for October's presidential election, citing the so-called "Clean Record Law", which bans anyone with a criminal record from seeking public office.

Haddad said there will be a petition made to the United Nations so that it can appear before Brazilian authorities regarding the decision.

Earlier this month, the United Nations Human Rights Committee said Lula could not be disqualified as a presidential candidate until all his appeals were judged.

However, the majority of the TSE judges said that the UN's stance was not mandatory in this case.