Bolsonaro has been taken into custody after authorities found he posed a concrete flight risk while under home confinement.
The ex-president was convicted of orchestrating a military coup in last fall and handed more than over two decades in incarceration, but he remained under home detention pending appeals.
Top Judicial Official the presiding justice said the move to detain the elderly politician was a precautionary step after "new facts" emerged.
This involved trying to remove his electronic bracelet and a summons to a supporters' gathering that could enable a chance to flee".
Legal Document Reveals Escape Risks
In a filing authorising the arrest, Justice Moraes said data from the unit overseeing the former president's confinement suggested the ex-president's "intention to break the electronic ankle bracelet to ensure success in his flight.
This, it said, would be "facilitated by the chaos caused by the gathering called by his child.
His son, his son Flávio, who holds office as a congressional representative, called for a assembly of his supporters near the former president's residence to take place on Saturday evening.
His son wrote on social media on the previous day: "Are you going to fight for your nation, or see it all from your mobile device there on your couch? I urge you to struggle with us."
He said the demonstration would be so followers could offer prayers for his physical condition and for the restoration of democratic rule in our land."
Foreign Shelter Risks
Part of the judge's determination was the chance of the former president's transfer to embassies near the dwelling, considering that the investigations revealed a history of planning to request asylum through a consular facility", a announcement said.
The judicial paperwork emphasizes that the American diplomatic mission in the federal district, the capital city, is situated around approximately 13 kilometers from Bolsonaro's home.
Worldwide Consequences
Bolsonaro's legal woes have generated frustration from fellow right-wing populist American leader Donald Trump, leading him to impose a 50% tariff on imports of Brazilian goods.
Bolsonaro is being held in a federal law enforcement building in the capital and will undergo a detention review on Sunday.
Recent Judicial Appeals
It was only on Friday that the his legal team asked the Supreme Court to authorize him to fulfill his full incarceration period under house arrest, with digital surveillance.
They also petitioned that the former president be allowed to exit his dwelling for medical treatment, saying he required frequent medical attention for respiratory ailments and other health problems.
Details of Guilty Verdict
He was found guilty of heading a conspiracy aimed at maintaining his control after he lost the presidential race to his ideological adversary, Luiz Inácio Lula da Silva.
Supreme Court justices said that he knew of a plot which included plans to kill the current president and his vice-presidential running mate, his vice-presidential candidate, and to arrest and execute the presiding judge - the High Court judge who has been overseeing his judicial proceedings.
The scheme was thwarted because it didn't receive the support of the army and air force commanders. His successor was took office without issue on January 1st, 2023.
But a week later, on 8 January, numerous his backers stormed and vandalised public facilities in the federal district, Brasília.
The security forces intervened and around 1,500 people were arrested.
The magistrates found that the rioters had been encouraged by Bolsonaro whose plan, they said, was for the national armed forces to intervene, bring back stability and reinstate his authority.
At the moment, Bolsonaro's lawyers called the decades-long sentence extremely harsh.
He was also barred from campaigning for office until the year 2060 - a decade minus two years after the end of his sentence.
The former president called the legal proceedings a targeted investigation" and said it was designed to prevent him competing in the 2026 presidential election.
