Bolsonaro has been taken into custody after authorities found he posed a serious risk of fleeing while under house arrest.
The ex-president was sentenced of planning a military coup in the ninth month and sentenced more than 27 years in prison, but he was staying under confinement pending legal challenges.
Brazilian Supreme Court Justice the presiding justice said the action to imprison the septuagenarian politician was a precautionary step after fresh information came to light.
This involved seeking to disable his electronic bracelet and a summons to a public vigil that could facilitate a potential flight.
Judicial Records Show Flight Fears
In a paperwork permitting the custody, the magistrate said intelligence from the centre monitoring his home detention suggested the ex-president's "intention to break the tracking monitor to ensure success in his flight.
This, it said, would be "facilitated by the confusion caused by the protest called by his offspring.
His offspring, Flávio, who holds office as a congressional representative, called for a meeting of his followers near Bolsonaro's home to take place on the weekend.
His son wrote on digital networks on the previous day: Do you plan to struggle for your country, or see it all from your smartphone there on your sofa? I invite you to fight with us."
He said the gathering would be so backers could offer prayers for his well-being and for the return of democracy in our nation."
Diplomatic Refuge Fears
Part of the judge's determination was the potential of his move to foreign missions near the residence, considering that the probes revealed a history of arranging to request asylum through a diplomatic representation", a declaration said.
The court filing emphasizes that the American diplomatic mission in the federal district, the capital city, is positioned around 13km from his dwelling.
International Reactions
Bolsonaro's legal woes have provoked anger from fellow right-wing populist American leader President Trump, prompting him to implement a 50% tariff on imports of Brazilian goods.
Bolsonaro is being kept in a Federal Police station in the capital and will undergo a custody hearing on Sunday.
Recent Legal Requests
It was only on Friday that the former president's lawyers asked the Supreme Court to allow him to fulfill his full incarceration period under home confinement, with tracking devices.
They also requested that the former president be permitted to depart his residence for healthcare, saying he required regular treatment for lung conditions and other illnesses.
Background on Conviction
Bolsonaro was determined responsible of heading a plot aimed at retaining his authority after he was defeated in the national vote to his political opponent, Lula.
Supreme Court justices said that he was aware of a plot which encompassed plans to assassinate his opponent and his vice-presidential running mate, Geraldo Alckmin, and to imprison and murder Alexandre de Moraes - the Supreme Court justice who has been overseeing the former president's case.
The conspiracy was stopped because it couldn't obtain the support of the army and air force commanders. The current president was sworn in without incident on January 1st, 2023.
But a following week, on the eighth of January, thousands of his backers attacked and damaged public facilities in the national capital, the capital city.
The security forces intervened and around fifteen hundred individuals were detained.
The justices found that the protesters had been provoked by him whose plan, they said, was for the country's army to step in, restore order and bring him back to power.
At the moment, the legal team called the over 27-year sentence unreasonably severe".
He was also prohibited from running for public office until twenty-sixty - eight years after the conclusion of his imprisonment.
The ex-leader called the legal proceedings a targeted investigation" and said it was intended to stop him participating in the 2026 presidential election.
