Ariel Pato Calvici is one of the leaders of the barra brava of the Núñez club. He became visible in the gallery in 2014, spent time in jail and was the protagonist of an internal war between Los Borrachos del Tablón.
The confrontation between a group of supporters of River and agents of the National Police of Peru happened during the match that the team led by Martin Demichelisdrew 1-1 with Sporting Cristal on Thursday.