Blowing off an explosive would be one way to celebrate a soccer score by your favorite team. But this also would be illegal.
Maybe that is why someone abandoned a bag containing 11 homemade explosives near the Estadio Nacional. Police found them and reported that there were 11 devices of phosphorus and powder.
These are called bengalas in Spanish, and there are many varieties, some of them legal.
The stadium hosted Deportivo Saprissa and the Liga Deportiva Alajuelense Sunday.