Bolsonaro has been arrested after authorities concluded he posed a serious risk of fleeing while under domestic detention.
The former head of state was convicted of plotting a military coup in the ninth month and handed more than 27 years in prison, but he remained under confinement pending appeals.
Top Judicial Official the presiding justice said the action to imprison the septuagenarian politician was a preventative measure after recent developments emerged.
This encompassed attempting to break his ankle monitor and a summons to a supporters' gathering that could enable a possible escape.
Court Filing Details Flight Fears
In a filing authorising the detention, the judge said data from the centre monitoring Bolsonaro's house arrest suggested the former leader's "intention to break the surveillance device to guarantee victory in his getaway".
This, it said, would be "facilitated by the confusion caused by the demonstration called by his son.
His offspring, Flávio Bolsonaro, who works as a legislator, called for a gathering of his supporters near Bolsonaro's home to take place on Saturday evening.
The senator wrote on digital networks on last Friday: Will you battle for your country, or see it all from your phone there on your sofa? I call on you to fight with us."
He said the vigil would be so backers could "pray for his well-being and for the reestablishment of democratic governance in our nation."
Diplomatic Refuge Fears
Part of Justice Moraes's ruling was the possibility of Bolsonaro's "relocation to foreign missions near the home, considering that the probes revealed a record of arranging to seek refuge through a consular facility", a statement said.
The legal document underscores that the United States embassy in the capital, Brazil's capital, is located around 13km from the former president's residence.
International Reactions
The former president's legal troubles have drawn the ire of fellow conservative nationalist American leader Trump, prompting him to impose a 50% tariff on Brazilian product imports.
He is being held in a national police facility in Brasilia and will experience a detention review on Sunday.
Recent Legal Requests
It was only on Friday that the his legal team asked the High Court to permit him to serve his whole jail sentence under domestic detention, with electronic monitoring.
They also asked that he be permitted to exit his dwelling for medical care, saying he required frequent medical attention for respiratory ailments and other illnesses.
Background on Conviction
The former president was determined responsible of heading a conspiracy aimed at retaining his authority after he lost the presidential race to his political opponent, Lula.
Supreme Court justices said that he knew of a plot which encompassed plans to kill Lula and his VP candidate, Geraldo Alckmin, and to detain and kill the presiding judge - the High Court judge who has been managing the former president's case.
The scheme was thwarted because it didn't receive the endorsement of the army and air force commanders. His successor was took office without issue on the first day of 2023.
But a following week, on the eighth of January, thousands of his backers invaded and destroyed official structures in the capital, Brasília.
The police took action and around approximately 1,500 persons were taken into custody.
The justices found that the protesters had been provoked by Bolsonaro whose scheme, they said, was for the national armed forces to step in, restore order and bring him back to power.
At the period, the legal team called the decades-long sentence "absurdly excessive.
He was also prohibited from seeking elected position until twenty-sixty - eight years later after the end of his sentence.
The ex-leader called the trial a targeted investigation" and said it was intended to stop him running in the 2026 national vote.
