The Brazilian authorities have announced a permanent doubling of the police presence in the government district of the capital Brasília.
The number of police officers stationed around the Presidential Palace, Congress and the Supreme Court will be increased “immediately” from 240 to 500, the district’s interim governor, Celina Leão, announced to journalists on Monday.
The three buildings were stormed and vandalized on January 8 by supporters of right-wing ex-President Jair Bolsonaro.
In the search for suspected organizers and financial supporters of the storming of the government district, the federal police arrested a suspect on Monday, as Deputy Justice Minister Ricardo Cappelli announced.
It is being determined whether there were "professionals" among the rioters who had organized the roadblocks, demonstrations and vandalism of the past few weeks.
"There were men among the demonstrators who had local knowledge, mastered fighting techniques and looked like professionals," said the deputy justice minister, referring to a police officer who was injured in the riot.
A total of 44 military police officers were injured.
On January 8, hundreds of Bolsonaro supporters in the capital broke into the Congress building, the presidential palace and the seat of the Supreme Court and wreaked havoc there for hours.
Her anger was vented at the election victory of left-wing politician Luiz Inácio Lula da Silva, who narrowly defeated right-wing incumbent Bolsonaro in a runoff and has been in office since the beginning of the year.