“We went to the locker room because it was the best way to calm everything down, it could have ended in tragedy.
“You think about the families, the people who are there, who don’t know what’s going on and we were more concerned about that than playing a match that, at that point, was of secondary importance.”
Brazil captain Marquinhos, who could be seen interacting with Messi and the Argentinian players as they tried to calm the situation, shared the concerns.
“We were worried about the families, women and children, that we were seeing in panic up there in the stands,” Marquinhos told reporters.
“Down on the pitch it was hard for us to understand what was going on, it was a very scary situation.”
There were violent clashes between fans of Argentina’s Boca Juniors and Brazil’s Fluminense in Rio de Janeiro ahead of the Copa Libertadores final between the clubs this month.
On Tuesday, the Argentina players eventually returned, after police corralled the visiting fans in a pen and the match started after a lengthy delay.
Argentina won 1-0 with a 63rd-minute headed winner from defender Nicolas Otamendi and celebrated the victory over their fiercest rivals in front of their fans at the same end of the ground where the trouble had occurred.
It was a third straight defeat for five-times World Cup winners Brazil, who had midfielder Joelinton sent off 18 minutes from time.