Jair Bolsonaro has been taken into custody after authorities determined he posed a definite escape threat while under house arrest.
The former head of state was sentenced of planning a military coup in last fall and given more than 27 years in jail, but he remained under confinement pending appeals.
High Court Judge Justice Moraes said the action to imprison the elderly politician was a precautionary step after recent developments emerged.
This encompassed seeking to disable his electronic bracelet and a invitation to a demonstration that could facilitate a possible escape.
Judicial Records Show Flight Fears
In a document approving the detention, Justice Moraes said information from the centre monitoring the former president's confinement suggested the ex-president's plan to remove the surveillance device to guarantee victory in his flight.
This, it said, would be made easier by the disorder caused by the protest called by his son.
His son, his son Flávio, who works as a senator, called for a meeting of his followers near the former president's residence to take place on Saturday evening.
His son wrote on social media on the previous day: "Are you going to fight for your nation, or watch it all from your mobile device there on your sofa? I urge you to struggle with us."
He said the demonstration would be so supporters could "pray for his health and for the reestablishment of democratic governance in our country."
Foreign Shelter Risks
Part of the magistrate's determination was the potential of his "relocation to foreign missions near the residence, considering that the inquiries revealed a history of arranging to ask for protection through a embassy office", a announcement said.
The legal document underscores that the United States embassy in the national capital, Brasilia, is positioned around approximately 13 kilometers from Bolsonaro's home.
Global Responses
His judicial problems have generated frustration from fellow populist conservative US President President Trump, prompting him to implement a fifty percent tax on goods coming from Brazil.
The former president is being kept in a federal law enforcement building in the capital and will have a detention review on Sunday.
Latest Court Petitions
It was only on last Friday that the his legal team asked the Supreme Court to permit him to serve his whole jail sentence under home confinement, with electronic monitoring.
They also asked that he be allowed to exit his dwelling for healthcare, saying he needed frequent medical attention for pulmonary infections and other ailments.
Details of Guilty Verdict
The former president was found guilty of orchestrating a conspiracy aimed at retaining his authority after he failed to win the 2022 election to his ideological adversary, Luiz Inácio Lula da Silva.
Supreme Court justices said that he was aware of a plot which encompassed plans to kill Lula and his running partner, Geraldo Alckmin, and to arrest and execute the presiding judge - the top judicial official who has been managing his judicial proceedings.
The conspiracy was prevented because it couldn't obtain the backing of the army and air force commanders. His successor was inaugurated without problem on January 1st, 2023.
But a following week, on the eighth of January, numerous his followers invaded and destroyed public facilities in the capital, Brasília.
The police stepped in and around 1,500 people were detained.
The judges found that the protesters had been encouraged by Bolsonaro whose plan, they said, was for the Brazilian military to step in, reestablish control and return him to office.
At the moment, the legal team called the over 27-year sentence extremely harsh.
He was also prohibited from campaigning for office until twenty-sixty - eight years after the completion of his term.
The ex-leader called the legal proceedings a "witch hunt and said it was aimed at blocking him running in the 2026 national vote.