Some argentina

World Cup: Lionel Messi has expressed concern that the crowd trouble which caused a delay in Argentina's World Cup qualifier against Brazil "could have ended in tragedy".

Violence spewed between fans of Brazil and Argentina ahead of their World Cup qualifying match at the Maracana Stadium on Tuesday night. This led to the reigning World Cup champions leaving the field just moments before the scheduled kickoff.

"It was bad because we saw how they were beating people. The police, as happened in the Libertadores final, were once again repressing the people with night sticks. We went to the locker room because it was the best way to calm everything down, it could have ended in tragedy," said Messi as quoted by BBC.