April 5 (UPI) -- A Brazilian judge Thursday ordered former leader Luiz Inacio Lula da Silva to turn himself in to police within 24 hours.
Federal judge Sergio Moro ordered Lula, 72, to present himself at the federal police headquarters in the southern city of Curitiba before Friday afternoon.
Moro added a special cell "was prepared in advance... in which the ex-president will be separated from other prisoners, with no risk for his moral or physical integrity."
The announcement of the arrest warrant prompted demonstrations by hundreds of Lula supporters outside the metalworkers union near Sao Paulo
Earlier Thursday Brazil's Supreme Court, after nearly 11 hours of deliberation, rejected Lula's plea to stay out of jail while appealing a corruption case that may sink his bid to recapture the presidency.
"The presumption of innocence, this fundamental right, which will fatally come back for all, was not worth today for Lula," Gleisi Hoffmann, the national president of Lula's Workers' Party, tweeted after the decision. "A sad day for democracy and for Brazil!"
Lula, currently a frontrunner in October's presidential election, had said he's innocent of the charges against him, saying they are politically motivated. By law, no one convicted of a criminal charge upheld on appeal can run for elected office for at least eight years.
However, numerous exceptions to the law, known as the "clean slate," have been made since its introduction in 2010. The decision of Lula's eligibility to run for president rests with Brazil's top electoral court, TSE.
Lula was Brazil's president until 2010 and had an approval rating of more than 80 percent. He was ultimately indicted for corruption and money laundering in a government and business scandal known as Operation Car Wash.
Investigators examined allegations that Brazilian construction companies overcharged the state oil company for building contracts. Lula was found guilty of accepting $1.1 million in bribes.
An appeals court upheld the initial verdict and increased his sentence to 12 and-a-half years.
The former president oversaw a period of sustainable economic growth, with his social policies helping lift millions of people out of poverty. Despite his conviction and six separate pending corruption trials, Lula was leading opinion polls ahead of the October vote.