Jair Bolsonaro has been arrested after authorities determined he posed a definite escape threat while under domestic detention.
The one-time leader was sentenced of planning a armed takeover in last fall and handed more than over two decades in incarceration, but he was staying under house arrest pending court reviews.
High Court Judge Justice Moraes said the move to detain the septuagenarian politician was a precautionary step after fresh information came to light.
This encompassed attempting to break his tracking device and a summons to a supporters' gathering that could "allow for a potential flight.
In a document approving the custody, the magistrate said information from the unit overseeing Bolsonaro's house arrest suggested the former leader's "intention to break the electronic ankle bracelet to secure accomplishment in his escape.
This, it said, would be made easier by the disorder caused by the protest called by his son.
His offspring, Flávio, who works as a congressional representative, called for a assembly of his backers near his father's house to take place on Saturday night.
Flávio Bolsonaro wrote on online platforms on the previous day: Will you battle for your country, or see it all from your phone there on your settee? I urge you to struggle with us."
He said the demonstration would be so backers could offer prayers for his physical condition and for the return of democracy in our land."
Part of the judge's determination was the possibility of Bolsonaro's transfer to foreign missions near the residence, considering that the investigations revealed a background of arranging to ask for protection through a embassy office", a declaration said.
The judicial paperwork underscores that the American diplomatic mission in the national capital, the capital city, is located around 8 miles from Bolsonaro's home.
The former president's legal troubles have drawn the ire of fellow populist conservative US President Donald Trump, causing him to implement a 50% tariff on goods coming from Brazil.
Bolsonaro is being held in a national police facility in the capital and will have a detention review on the next day.
It was only on Friday that the former president's lawyers asked the Supreme Court to permit him to fulfill his full incarceration period under house arrest, with digital surveillance.
They also requested that Bolsonaro be authorized to depart his residence for medical treatment, saying he needed ongoing care for lung conditions and other health problems.
He was convicted of orchestrating a scheme aimed at retaining his authority after he lost the 2022 election to his ideological adversary, Lula.
High Court judges said that he had knowledge of a plan which involved plans to assassinate his opponent and his VP candidate, Alckmin, and to detain and kill Justice Moraes - the High Court judge who has been presiding over Bolsonaro's trial.
The conspiracy was prevented because it didn't receive the backing of the military leaders. Lula was inaugurated without problem on 1 January 2023.
But a following week, on 8 January, many his backers stormed and vandalised public facilities in the federal district, Brasília.
The police stepped in and around approximately 1,500 persons were detained.
The magistrates found that the protesters had been encouraged by Bolsonaro whose strategy, they said, was for the national armed forces to take action, reestablish control and bring him back to power.
At the moment, the legal team called the over 27-year sentence unreasonably severe".
He was also prohibited from campaigning for office until twenty-sixty - a decade minus two years after the completion of his term.
The ex-leader called the trial a targeted investigation" and said it was designed to prevent him competing in the 2026 presidential election.