Jair Bolsonaro has been taken into custody after authorities determined he posed a concrete flight risk while under domestic detention.
The former head of state was convicted of planning a armed takeover in the ninth month and given more than a 27-year term in incarceration, but he was staying under house arrest pending court reviews.
Brazilian Supreme Court Justice Alexandre de Moraes said the move to detain the 70-year-old politician was a precautionary step after fresh information came to light.
This encompassed seeking to disable his tracking device and a invitation to a public vigil that could "allow for a possible escape.
In a paperwork permitting the detention, the magistrate said information from the unit overseeing the former president's confinement suggested the former leader's aim to disable the tracking monitor to ensure success in his flight.
This, it said, would be assisted by the disorder caused by the protest called by his child.
His son, his son Flávio, who serves as a congressional representative, called for a meeting of his supporters near Bolsonaro's home to take place on Saturday night.
His son wrote on digital networks on Friday: Will you battle for your nation, or watch it all from your phone there on your settee? I invite you to struggle with us."
He said the demonstration would be so backers could offer prayers for his health and for the reestablishment of democratic governance in our country."
Part of the judge's decision was the potential of his move to foreign missions near the dwelling, considering that the probes revealed a background of planning to ask for protection through a diplomatic representation", a statement said.
The legal document underscores that the American diplomatic mission in the capital, the capital city, is positioned around approximately 13 kilometers from his dwelling.
The former president's legal troubles have generated frustration from fellow right-wing populist US President President Trump, leading him to impose a 50% tariff on imports of Brazilian goods.
The former president is being detained in a Federal Police station in the capital and will have a imprisonment assessment on Sunday.
It was only on Friday that the former president's lawyers asked the High Court to permit him to serve his whole jail sentence under domestic detention, with tracking devices.
They also requested that the former president be allowed to leave his home for medical care, saying he needed regular treatment for respiratory ailments and other health problems.
The former president was found guilty of orchestrating a scheme aimed at keeping him in power after he failed to win the 2022 election to his ideological adversary, Lula.
Supreme Court justices said that he knew of a scheme which included plans to assassinate his opponent and his running partner, Alckmin, and to arrest and execute the presiding judge - the High Court judge who has been overseeing Bolsonaro's trial.
The scheme was prevented because it failed to get the endorsement of the military leaders. His successor was inaugurated without issue on the first day of 2023.
But a seven days after, on 8 January, thousands of his followers stormed and vandalised official structures in the national capital, the capital city.
The security forces intervened and around fifteen hundred individuals were detained.
The justices found that the protesters had been incited by the former president whose plan, they said, was for the country's army to step in, reestablish control and reinstate his authority.
At the time, his attorneys called the over 27-year sentence unreasonably severe".
He was also banned from seeking elected position until twenty-sixty - a decade minus two years after the conclusion of his imprisonment.
The former president called the court case a political persecution and said it was designed to prevent him running in the 2026 national vote.
Elena Hartwell is a multidisciplinary artist and educator passionate about fostering creative communities in London.