Bolsonaro has been taken into custody after authorities concluded he posed a concrete flight risk while under domestic detention.
The ex-president was sentenced of planning a armed takeover in last fall and handed more than over two decades in prison, but he was staying under house arrest pending legal challenges.
Top Judicial Official the presiding justice said the decision to arrest the elderly politician was a precautionary step after recent developments came to light.
This involved trying to remove his electronic bracelet and a call for a public vigil that could enable a possible escape.
Judicial Records Show Escape Concerns
In a paperwork permitting the detention, the judge said intelligence from the facility tracking his home detention suggested the one-time head of state's "intention to break the electronic ankle bracelet to ensure success in his flight.
This, it said, would be made easier by the chaos caused by the demonstration called by his child.
His child, Flávio Bolsonaro, who holds office as a senator, called for a assembly of his followers near his father's house to take place on Saturday night.
The senator wrote on online platforms on Friday: "Are you going to fight for your nation, or watch it all from your smartphone there on your sofa? I invite you to struggle with us."
He said the demonstration would be so backers could "pray for his health and for the reestablishment of democratic governance in our land."
Foreign Shelter Risks
Part of the judge's decision was the chance of the former president's "relocation to foreign missions near the dwelling, considering that the investigations revealed a history of arranging to request asylum through a consular facility", a declaration said.
The legal document emphasizes that the US embassy in the national capital, Brazil's capital, is situated around approximately 13 kilometers from Bolsonaro's home.
Worldwide Consequences
The former president's legal troubles have drawn the ire of fellow populist conservative United States President Donald Trump, leading him to implement a fifty percent tax on goods coming from Brazil.
The former president is being detained in a national police facility in Brasilia and will have a detention review on the following day.
Recent Judicial Appeals
It was only on Friday that the former president's lawyers asked the High Court to allow him to complete his entire prison term under house arrest, with electronic monitoring.
They also requested that he be authorized to leave his home for medical care, saying he demanded regular treatment for pulmonary infections and other ailments.
Background on Conviction
Bolsonaro was determined responsible of leading a conspiracy aimed at keeping him in power after he was defeated in the 2022 election to his left-wing rival, Luiz Inácio Lula da Silva.
Supreme Court justices said that he knew of a plot which encompassed plans to murder Lula and his vice-presidential running mate, his vice-presidential candidate, and to arrest and execute Alexandre de Moraes - the High Court judge who has been managing Bolsonaro's trial.
The scheme was stopped because it couldn't obtain the support of the armed forces officials. The current president was took office without issue on January 1st, 2023.
But a seven days after, on 8 January, thousands of his backers stormed and vandalised public facilities in the capital, Brazil's capital.
The security forces took action and around 1,500 people were arrested.
The magistrates found that the demonstrators had been encouraged by him whose plan, they said, was for the country's army to step in, bring back stability and return him to office.
At the moment, the legal team called the decades-long sentence "absurdly excessive.
He was also barred from seeking elected position until the year 2060 - eight years after the conclusion of his imprisonment.
The one-time head of state called the court case a political persecution and said it was aimed at blocking him competing in the 2026 presidential election.
