It was a qualifying match for the 1964 Olympic Games between Peru and Argentina. The match took place at the « Estadio Nacional Jose Diaz » in Lima; Peru’s capital.
The Uruguayan referee Eduardo Angel Pazos canceled the Peruvian equalizing goal at the end of the game for a non-existent fault in favor of Argentina, which led to violent protests by Peruvian fans eventually causing a riot.
318 supporters were killed that day and 500 other people were seriously injured. This disaster is considered as one of the greatest tragedies in the history of football.