A Copa Sudamericana match between Argentina's Club Atlético Independiente and Chile's Universidad de Chile, held in Avellaneda, Buenos Aires, was suspended on August 20, 2025, due to violent clashes between fans. The incidents resulted in at least 20 injuries, including 10 serious cases, and over 100 arrests, predominantly of Chilean supporters. One Universidad de Chile fan was reported in critical condition after falling from the stadium stands amid the chaos. Videos surfaced showing aggressive behavior, including Chilean fans being beaten and stripped by Independiente supporters. Allegations arose of police complicity or passivity during the violence, with some accusing an agreement between Independiente fans and local police to target Chilean supporters. The Chilean government, led by President Gabriel Boric, condemned the attacks, labeling them as unacceptable and instructing Interior Minister Álvaro Elizalde to travel to Buenos Aires to accompany the injured fans and oversee the situation of detainees. Subsequently, Argentine justice ordered the release of 104 detained Chilean fans following diplomatic and club interventions. CONMEBOL, the South American football governing body, expressed strong condemnation of the violence and is investigating the incident, considering sanctions against both clubs. Independiente has expelled 25 supporters involved in the attacks with lifetime bans. Universidad de Chile has taken legal action in Argentine courts against the aggressors. The incident has sparked diplomatic tensions between Chile and Argentina, with both sides exchanging blame over security failures. The aftermath has also affected the Chilean football team, with players receiving threats and closing their social media accounts. Additionally, the Independiente stadium faces a suspension order by Argentine justice due to the violent outbreak. President Boric confirmed that aggressors from Independiente will face charges of attempted homicide. The incident has prompted calls for stronger measures to eradicate violence in football stadiums across South America.