Bolsonaro has been detained after authorities determined he posed a serious risk of fleeing while under domestic detention.
The former head of state was found guilty of plotting a armed takeover in the ninth month and sentenced more than over two decades in jail, but he continued under house arrest pending appeals.
Top Judicial Official Justice Moraes said the decision to arrest the 70-year-old politician was a preventative measure after fresh information emerged.
This involved seeking to disable his ankle monitor and a invitation to a demonstration that could "allow for a possible escape.
Court Filing Details Flight Fears
In a document approving the custody, the judge said intelligence from the facility tracking Bolsonaro's house arrest suggested the ex-president's "intention to break the surveillance device to secure accomplishment in his getaway".
This, it said, would be made easier by the confusion caused by the demonstration called by his child.
His child, Flávio, who serves as a congressional representative, called for a assembly of his backers near the former president's residence to take place on Saturday night.
The senator wrote on online platforms on last Friday: "Are you going to fight for your country, or watch it all from your phone there on your settee? I invite you to battle with us."
He said the vigil would be so supporters could offer prayers for his health and for the return of democracy in our country."
Foreign Shelter Risks
Part of Justice Moraes's decision was the chance of Bolsonaro's transfer to embassies near the dwelling, considering that the investigations revealed a history of organizing to ask for protection through a consular facility", a declaration said.
The court filing highlights that the United States embassy in the national capital, Brazil's capital, is located around 8 miles from his dwelling.
Worldwide Consequences
Bolsonaro's legal woes have provoked anger from fellow populist conservative American leader President Trump, causing him to implement a half-rate duty on goods coming from Brazil.
Bolsonaro is being held in a national police facility in Brasilia and will undergo a custody hearing on Sunday.
Recent Legal Requests
It was only on Friday that the former president's lawyers asked the High Court to permit him to complete his entire prison term under home confinement, with digital surveillance.
They also asked that he be allowed to depart his residence for healthcare, saying he needed regular treatment for respiratory ailments and other health problems.
Details of Guilty Verdict
He was convicted of heading a conspiracy aimed at keeping him in power after he was defeated in the 2022 election to his political opponent, President Lula.
Supreme Court justices said that he had knowledge of a plot which encompassed plans to murder his opponent and his VP candidate, Geraldo Alckmin, and to detain and kill Justice Moraes - the Supreme Court justice who has been overseeing his judicial proceedings.
The scheme was prevented because it didn't receive the support of the army and air force commanders. His successor was inaugurated without incident on January 1st, 2023.
But a week later, on 8 January, numerous Bolsonaro supporters stormed and vandalised official structures in the national capital, Brasília.
The law enforcement took action and around 1,500 people were taken into custody.
The magistrates found that the protesters had been encouraged by the former president whose scheme, they said, was for the Brazilian military to intervene, reestablish control and bring him back to power.
At the period, his attorneys called the over 27-year sentence unreasonably severe".
He was also banned from campaigning for office until twenty-sixty - a decade minus two years after the end of his sentence.
The ex-leader called the legal proceedings a "witch hunt and said it was intended to stop him running in the 2026 national vote.
