Jair Bolsonaro has been taken into custody after authorities determined he posed a concrete flight risk while under home confinement.
The ex-president was convicted of orchestrating a military coup in September and handed more than over two decades in incarceration, but he continued under home detention pending court reviews.
Top Judicial Official Alexandre de Moraes said the decision to arrest the 70-year-old politician was a precautionary step after fresh information emerged.
This included attempting to break his electronic bracelet and a invitation to a public vigil that could enable a possible escape.
In a paperwork permitting the custody, the judge said information from the centre monitoring his home detention suggested the one-time head of state's aim to disable the electronic ankle bracelet to guarantee victory in his flight.
This, it said, would be assisted by the chaos caused by the gathering called by his offspring.
His child, Flávio Bolsonaro, who serves as a legislator, called for a meeting of his supporters near Bolsonaro's home to take place on the weekend.
Flávio Bolsonaro wrote on online platforms on last Friday: Will you battle for your country, or see it all from your smartphone there on your settee? I call on you to battle with us."
He said the demonstration would be so backers could "pray for his physical condition and for the restoration of democratic rule in our country."
Part of Justice Moraes's determination was the chance of Bolsonaro's move to foreign missions near the dwelling, considering that the inquiries revealed a history of arranging to ask for protection through a embassy office", a announcement said.
The court filing highlights that the United States embassy in the federal district, the capital city, is situated around approximately 13 kilometers from the former president's residence.
Bolsonaro's legal woes have drawn the ire of fellow conservative nationalist United States President Donald Trump, prompting him to impose a half-rate duty on imports of Brazilian goods.
Bolsonaro is being held in a federal law enforcement building in the capital and will have a imprisonment assessment on the following day.
It was only on the previous day that the his legal team asked the High Court to allow him to serve his whole jail sentence under domestic detention, with tracking devices.
They also asked that he be permitted to exit his dwelling for medical treatment, saying he required frequent medical attention for lung conditions and other health problems.
The former president was convicted of heading a conspiracy aimed at maintaining his control after he was defeated in the national vote to his left-wing rival, Lula.
High Court judges said that he was aware of a plan which involved plans to murder his opponent and his running partner, Alckmin, and to arrest and execute the presiding judge - the Supreme Court justice who has been managing his judicial proceedings.
The plot was prevented because it couldn't obtain the support of the armed forces officials. Lula was inaugurated without problem on 1 January 2023.
But a following week, on January 8th, many Bolsonaro supporters invaded and destroyed official structures in the national capital, Brazil's capital.
The law enforcement intervened and around approximately 1,500 persons were taken into custody.
The judges found that the rioters had been provoked by the former president whose plan, they said, was for the country's army to step in, bring back stability and reinstate his authority.
At the moment, the legal team called the decades-long sentence "absurdly excessive.
He was also banned from seeking elected position until the year 2060 - a decade minus two years after the conclusion of his imprisonment.
The former president called the court case a political persecution and said it was intended to stop him running in the 2026 national vote.
Elara Vance is a Toronto-based journalist and cultural critic with a passion for exploring the intersection of politics and everyday life in Canada.