Jair Bolsonaro has been detained after authorities concluded he posed a definite escape threat while under home confinement.
The ex-president was convicted of planning a armed takeover in last fall and sentenced more than 27 years in incarceration, but he continued under confinement pending appeals.
High Court Judge Justice Moraes said the move to detain the septuagenarian politician was a safety action after "new facts" were revealed.
This involved seeking to disable his tracking device and a invitation to a demonstration that could facilitate a potential flight.
In a paperwork permitting the detention, the judge said information from the centre monitoring the former president's confinement suggested the ex-president's plan to remove the tracking monitor to secure accomplishment in his getaway".
This, it said, would be made easier by the disorder caused by the demonstration called by his son.
His offspring, Flávio, who works as a congressional representative, called for a meeting of his backers near his father's house to take place on Saturday night.
His son wrote on online platforms on Friday: Will you battle for your homeland, or observe everything from your mobile device there on your sofa? I invite you to fight with us."
He said the gathering would be so followers could seek divine intervention for his physical condition and for the return of democracy in our nation."
Part of the magistrate's ruling was the chance of his transfer to diplomatic missions near the home, considering that the probes revealed a history of organizing to request asylum through a embassy office", a declaration said.
The judicial paperwork underscores that the United States embassy in the national capital, Brasilia, is located around 13km from Bolsonaro's home.
Bolsonaro's legal woes have provoked anger from fellow conservative nationalist US President Donald Trump, leading him to enact a half-rate duty on Brazilian product imports.
He is being kept in a national police facility in the capital and will undergo a imprisonment assessment on the next day.
It was only on last Friday that the former president's lawyers asked the Top Court to permit him to complete his entire prison term under domestic detention, with tracking devices.
They also requested that he be permitted to depart his residence for healthcare, saying he demanded frequent medical attention for pulmonary infections and other illnesses.
He was convicted of heading a conspiracy aimed at retaining his authority after he was defeated in the 2022 election to his left-wing rival, President Lula.
Top judicial officials said that he knew of a scheme which involved plans to assassinate his opponent and his vice-presidential running mate, his vice-presidential candidate, and to arrest and execute Justice Moraes - the High Court judge who has been presiding over 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 the first day of 2023.
But a week later, on 8 January, thousands of his followers invaded and destroyed government buildings in the federal district, the capital city.
The police intervened and around approximately 1,500 persons were arrested.
The justices found that the rioters had been encouraged by the former president whose strategy, they said, was for the Brazilian military to step in, restore order and return him to office.
At the time, the legal team called the over 27-year sentence unreasonably severe".
He was also barred from running for public office until the year 2060 - eight years after the end of his sentence.
The ex-leader called the legal proceedings a political persecution and said it was designed to prevent him participating in the 2026 presidential election.
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