As the stewards made them sit down and the Fifa suits rushed in talking on their wireless sets, one of those who had entered showed the middle finger to photographers and reporters who tried to make sense of what was happening.
Watch: Chilean fans confront police over ticket prices
Marcelo Durante from Ikeke in Chile was one of them. Showing a massive red bruise on his right arm, he said there was a sudden rush at the entrance and they all went in thinking this was the way to the stadium. Durante, in a red Chile team shirt, spoke no English but what he told one group of journalists was translated from Spanish by another reporter.
Even as the Spain-Chile match began, the supporters were seen seated in an alley behind the media centre being minded by stewards. That area of the media centre lay in tatters and as shutterbugs jostled for a picture, the temporary walls shook and the working area tables creaked under their weight. For most journalists, this was the first sign of trouble at what has so far been a smooth World Cup.
Asked how this happened, Fifa official smiled and simply said: "I can;t comment before walking away." The volunteers had cordoned off the area at the media enclosure behind which the Chile fans were made to sit on the ground.
None of them had tickets and seeing that security was lax at the media centre entrance, the rushed in. They perhaps knew, said a Chilean reporter who spoke English, that there is an entrance to the terraces behind the temporary walls of the media centre. they rushed towards that side and seeing it was locked moved in the other direction. That was when they were intercepted.