 There was a security guard manning an interior entrance to the stadium. He confirmed they had to lock the place down because there had been a breach. Then both teams were taken off the field during warm-ups, and then the stadium went on lockdown, and then they issued a statement, quote, in anticipation of tonight's Copa America final. Thousands of fans without tickets attempted to forcibly enter the stadium, putting other fans, security, and law enforcement officers at extreme risk.