Twenty-six football fans, mostly Chileans, were arrested at Arena Corinthians, Brazilian police said on Thursday.
Chapecoense beat Colombia's Atletico Nacional 2-1 on Tuesday in an emotional match that commemorated the victims of last year's fatal air crash.
The 2017 Recopa Sudamericana will pit Chapecoense against Atletico Nacional where a tinge of brotherhood will be evident.
Boston River and Comerciantes Unidos will play the first leg of their Copa Sudamericana clash on Feb. 28. The return game will be three months later.
The three surviving players of the air crash two months ago that killed 19 members of Brazil's Chapecoense lifted the Copa Sudamericana trophy.
Chapecoense were officially handed the Copa Sudamericana champions trophy on Wednesday evening at the draw for the 2017 Copa Libertadores.