Chile’s President Gabriel Boric called on social media for those behind the violence to face justice and pointed the finger at organisers.
As they left the stadium, Independiente fans expressed anger over the policing of the game and the decision to place the visitors in a section near the home fans.
Both clubs condemned the violence, the latest in South American football.
Independiente president Nestor Grindetti blamed supporters of the Chilean club, calling their behaviour “truly reprehensible”, he told TyC Sports.
Players from both sides had tried unsuccessfully to appeal for calm.
“This level of violence cannot be tolerated,” Chilean international Felipe Loyola, who plays for Independiente, wrote on social media.
“I don’t know where the police were.”
In April, two people died after fans and police clashed outside the Monumental Stadium in Santiago ahead of a game in the Copa Libertadores between Chile’s Colo Colo and Brazilian club Fortaleza.
