BRASÍLIA—Brazilian authorities detained about 1,500 supporters of former President Jair Bolsonaro who had participated in riots that targeted the Congress and other buildings, as the government expanded an investigation into the mob and who might have financed it.
Protesters supporting Mr. Bolsonaro forced their way into the presidential palace, Congress and Supreme Court in the capital on Sunday, many calling for military intervention to oust Luiz Inácio Lula da Silva, a standard-bearer of the Latin American left who took office a week ago. Mr. da Silva wasn’t in Brasília at the time.
