Fighting broke out between rival fans in the stands following a Brazilian top-flight match between Cruzeiro and Atletico Mineiro on Sunday.
Nautico and Fortaleza fans clashed ahead of their Copa do Nordeste match on Tuesday night.
Flamengo fans fought among themselves in the stands at the Morumbi Stadium during half-time of their match against Sao Paulo on Sunday.
Vasco da Gama fans clashed with military police in and outside the Sao Januario stadium following their side’s defeat to arch-rivals Flamengo on Saturday.
Goias and Vila Nova fans clashed on the terraces at the Serra Dourada Stadium in the central Brazilian city of Goiania following their Serie B match on Saturday.
Gama and Brasiliense fans clashed on the pitch during Sunday’s match at the Bezerrao Stadium in the city of Gama.
Corinthians fans clashed with police inside the Maracana stadium before their side’s match with Flamengo on Sunday.
Fans of Clube de Regatas Brasil and Centro Sportivo Alagoano clashed on the pitch at the Rei Pele stadium after the second leg of the Alagoas State Championship final between the two sides on Sunday.
Fortaleza fans fought each other in the stands at half-time of their Copa do Nordeste match with Sport Recife on Thursday.
Sao Paulo fans clashed with police during an Under-20 match at the Nogueirao stadium in Mogi das Cruzes on Sunday.