Jair Bolsonaro has been taken into custody after authorities concluded he posed a definite escape threat while under domestic detention.
The one-time leader was sentenced of plotting a armed takeover in last fall and given more than a 27-year term in incarceration, but he was staying under confinement pending legal challenges.
Top Judicial Official Alexandre de Moraes said the move to detain the 70-year-old politician was a preventative measure after fresh information came to light.
This included attempting to break his ankle monitor and a call for a public vigil that could "allow for a possible escape.
In a paperwork permitting the custody, Justice Moraes said intelligence from the unit overseeing Bolsonaro's house arrest suggested the one-time head of state's "intention to break the surveillance device to secure accomplishment in his escape.
This, it said, would be made easier by the chaos caused by the gathering called by his offspring.
His child, Flávio, who serves as a congressional representative, called for a gathering of his followers near the former president's residence to take place on the weekend.
The senator wrote on online platforms on Friday: Do you plan to struggle for your country, or see it all from your smartphone there on your settee? I call on you to fight with us."
He said the gathering would be so backers could seek divine intervention for his health and for the restoration of democratic rule in our land."
Part of the judge's decision was the possibility of the former president's move to foreign missions near the dwelling, considering that the probes revealed a record of planning to request asylum through a diplomatic representation", a statement said.
The court filing highlights that the US embassy in the capital, Brasilia, is situated around approximately 13 kilometers from the former president's residence.
His judicial problems have provoked anger from fellow right-wing populist US President Donald Trump, leading him to impose a half-rate duty on imports of Brazilian goods.
The former president is being kept in a federal law enforcement building in Brazil's capital city and will experience a detention review on Sunday.
It was only on the previous day that the ex-leader's attorneys asked the Top Court to authorize him to serve his whole jail sentence under house arrest, with tracking devices.
They also requested that he be allowed to exit his dwelling for healthcare, saying he demanded frequent medical attention for respiratory ailments and other ailments.
The former president was found guilty of leading a scheme aimed at retaining his authority after he lost the presidential race to his political opponent, President Lula.
Top judicial officials said that he had knowledge of a scheme which involved plans to assassinate Lula and his vice-presidential running mate, Geraldo Alckmin, and to detain and kill Justice Moraes - the top judicial official who has been presiding over Bolsonaro's trial.
The plot was prevented because it couldn't obtain the endorsement of the military leaders. Lula was inaugurated without issue on the first day of 2023.
But a seven days after, on the eighth of January, numerous Bolsonaro supporters stormed and vandalised official structures in the capital, Brasília.
The security forces took action and around 1,500 people were taken into custody.
The magistrates found that the protesters had been provoked by the former president whose scheme, they said, was for the Brazilian military to take action, restore order and return him to office.
At the time, the legal team called the 27 years and three months sentence unreasonably severe".
He was also barred from seeking elected position until 2060 - a decade minus two years after the end of his sentence.
The one-time head of state called the legal proceedings a targeted investigation" and said it was aimed at blocking him running in the next presidential race.
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