Bolsonaro has been arrested after authorities found he posed a concrete flight risk while under domestic detention.
The ex-president was convicted of plotting a government overthrow in the ninth month and given more than a 27-year term in prison, but he remained under home detention pending appeals.
Brazilian Supreme Court Justice Alexandre de Moraes said the move to detain the elderly politician was a safety action after fresh information were revealed.
This involved trying to remove his tracking device and a summons to a supporters' gathering that could "allow for a chance to flee".
Legal Document Reveals Flight Fears
In a filing authorising the custody, the magistrate said intelligence from the unit overseeing his home detention suggested the former leader's aim to disable 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 child.
His offspring, Flávio Bolsonaro, who serves as a senator, called for a gathering of his followers near his father's house to take place on Saturday evening.
His son wrote on online platforms on last Friday: Do you plan to struggle for your homeland, or watch it all from your mobile device there on your sofa? I call on you to battle with us."
He said the demonstration would be so supporters could seek divine intervention for his physical condition and for the restoration of democratic rule in our land."
Embassy Asylum Concerns
Part of the judge's decision was the potential of the former president's move to foreign missions near the home, considering that the probes revealed a background of arranging to ask for protection through a consular facility", a announcement said.
The court filing emphasizes that the United States embassy in the federal district, the capital city, is situated around 8 miles from his dwelling.
Worldwide Consequences
The former president's legal troubles have drawn the ire of fellow conservative nationalist United States President President Trump, prompting him to enact a 50% tariff on imports of Brazilian goods.
He is being detained in a national police facility in Brazil's capital city and will undergo a imprisonment assessment on Sunday.
Recent Judicial Appeals
It was only on Friday that the ex-leader's attorneys asked the High Court to authorize him to fulfill his full incarceration period under house arrest, with electronic monitoring.
They also requested that Bolsonaro be allowed to depart his residence for medical treatment, saying he needed frequent medical attention for respiratory ailments and other health problems.
Details of Guilty Verdict
He was convicted of heading a conspiracy aimed at maintaining his control after he was defeated in the national vote to his political opponent, Lula.
High Court judges said that he knew of a scheme which included plans to kill Lula and his running partner, his vice-presidential candidate, and to imprison and murder the presiding judge - the top judicial official who has been managing Bolsonaro's trial.
The plot was stopped because it couldn't obtain the support of the army and air force commanders. His successor was inaugurated without incident on January 1st, 2023.
But a week later, on the eighth of January, thousands of his followers attacked and damaged government buildings in the federal district, Brasília.
The security forces intervened and around 1,500 people were detained.
The judges found that the rioters had been encouraged by the former president whose strategy, they said, was for the country's army to take action, reestablish control and return him to office.
At the time, the legal team called the decades-long sentence unreasonably severe".
He was also barred from seeking elected position until twenty-sixty - eight years later after the conclusion of his imprisonment.
The one-time head of state called the trial a targeted investigation" and said it was aimed at blocking him participating in the 2026 national vote.
