The former Brazilian leader has been detained after authorities found he posed a concrete flight risk while under house arrest.
The former head of state was sentenced of plotting a military coup in September and sentenced more than a 27-year term in jail, but he was staying under confinement pending legal challenges.
High Court Judge Alexandre de Moraes said the action to imprison the elderly politician was a precautionary step after "new facts" emerged.
This involved attempting to break his electronic bracelet and a summons to a demonstration that could facilitate a possible escape.
Legal Document Reveals Escape Concerns
In a paperwork permitting the detention, the judge said intelligence from the facility tracking his home detention suggested the ex-president's "intention to break the surveillance device to secure accomplishment 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 serves as a senator, called for a assembly of his followers near his father's house to take place on Saturday night.
His son wrote on social media on last Friday: Do you plan to struggle for your nation, or watch it all from your mobile device there on your sofa? I urge you to fight with us."
He said the gathering would be so backers could offer prayers for his physical condition and for the restoration of democratic rule in our nation."
Diplomatic Refuge Fears
Part of the judge's ruling was the chance of the former president's transfer to foreign missions near the dwelling, considering that the investigations revealed a background of planning to seek refuge through a diplomatic representation", a announcement said.
The court filing highlights that the American diplomatic mission in the national capital, Brazil's capital, is positioned around 13km from his dwelling.
International Reactions
Bolsonaro's legal woes have generated frustration from fellow populist conservative United States President Donald Trump, leading him to impose a fifty percent tax on Brazilian product imports.
He is being kept in a Federal Police station in the capital and will experience a imprisonment assessment on the next day.
Latest Court Petitions
It was only on Friday that the former president's lawyers asked the High Court to authorize him to complete his entire prison term under domestic detention, with tracking devices.
They also petitioned that the former president be permitted to depart his residence for medical care, saying he required frequent medical attention for respiratory ailments and other health problems.
Background on Conviction
The former president was convicted of orchestrating a conspiracy aimed at maintaining his control after he was defeated in the national vote to his ideological adversary, Lula.
Supreme Court justices said that he knew of a plan which included plans to assassinate his opponent and his vice-presidential running mate, his vice-presidential candidate, and to arrest and execute the presiding judge - the top judicial official who has been managing his judicial proceedings.
The scheme was stopped because it failed to get the support of the military leaders. His successor was took office without incident on 1 January 2023.
But a week later, on January 8th, numerous his backers attacked and damaged government buildings in the national capital, Brazil's capital.
The police took action and around approximately 1,500 persons were taken into custody.
The magistrates found that the protesters had been provoked by the former president whose strategy, they said, was for the country's army to intervene, reestablish control and return him to office.
At the period, Bolsonaro's lawyers called the decades-long sentence extremely harsh.
He was also barred from campaigning for office until 2060 - eight years after the completion of his term.
The ex-leader called the legal proceedings a targeted investigation" and said it was intended to stop him participating in the 2026 presidential election.
