Brazil's federal police served on Friday search warrants at former President Jair Bolsonaro's home and the headquarters of his Liberal Party, Bolsonaro's press office said.
Police in a statement said they had served warrants ordered by the country's Supreme Court, but did not name Bolsonaro.
President Donald Trump has pressed Brazil to stop a legal case against Bolsonaro, saying that his former ally was the victim of a "witch hunt."
Bolsonaro, who was friendly with Trump when they were both in office, is on trial before Brazil's Supreme Court on charges of plotting a coup to stop President Luiz Inacio Lula da Silva from taking office in January 2023.