Jair Bolsonaro has been taken into custody after authorities found he posed a concrete flight risk while under house arrest.
The one-time leader was convicted of plotting a government overthrow in September and given more than over two decades in incarceration, but he continued under confinement pending legal challenges.
Top Judicial Official Justice Moraes said the move to detain the elderly politician was a precautionary step after fresh information were revealed.
This encompassed seeking to disable his ankle monitor and a invitation to a supporters' gathering that could enable a possible escape.
In a filing authorising the custody, Justice Moraes said intelligence from the unit overseeing the former president's confinement suggested the one-time head of state's aim to disable the surveillance device to ensure success in his escape.
This, it said, would be made easier by the chaos caused by the protest called by his child.
His offspring, Flávio Bolsonaro, who holds office as a senator, called for a gathering of his followers near the former president's residence to take place on Saturday night.
Flávio Bolsonaro wrote on online platforms on Friday: "Are you going to fight for your homeland, or watch it all from your phone there on your couch? I call on you to fight with us."
He said the vigil would be so followers could "pray for his physical condition and for the reestablishment of democratic governance in our nation."
Part of the judge's determination was the potential of his move to foreign missions near the dwelling, considering that the inquiries revealed a history of planning to request asylum through a consular facility", a announcement said.
The court filing highlights that the US embassy in the capital, Brasilia, is located around approximately 13 kilometers from the former president's residence.
Bolsonaro's legal woes have provoked anger from fellow right-wing populist American leader President Trump, prompting him to impose a fifty percent tax on Brazilian product imports.
He is being detained in a federal law enforcement building in Brazil's capital city and will experience a imprisonment assessment on the following day.
It was only on Friday that the ex-leader's attorneys asked the Top Court to allow him to serve his whole jail sentence under house arrest, with tracking devices.
They also requested that he be permitted to leave his home for medical treatment, saying he needed ongoing care for pulmonary infections and other health problems.
The former president was found guilty of heading a scheme aimed at keeping him in power after he lost the national vote to his ideological adversary, President Lula.
High Court judges said that he was aware of a plot which involved plans to assassinate Lula and his running partner, Alckmin, and to detain and kill Alexandre de Moraes - the top judicial official who has been presiding over Bolsonaro's trial.
The plot was prevented because it didn't receive the backing of the military leaders. Lula was sworn in without issue on the first day of 2023.
But a week later, on January 8th, numerous his followers stormed and vandalised public facilities in the national capital, the capital city.
The security forces intervened and around 1,500 people were detained.
The magistrates found that the rioters had been incited by the former president whose plan, they said, was for the Brazilian military to intervene, bring back stability and return him to office.
At the moment, Bolsonaro's lawyers called the decades-long sentence unreasonably severe".
He was also banned from seeking elected position until the year 2060 - eight years after the conclusion of his imprisonment.
The ex-leader called the court case a targeted investigation" and said it was designed to prevent him participating in the 2026 national vote.
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