At least one person was killed and about 60 were injured overnight during a fan rally for Alianza Lima supporters at the Alejandro Villanueva Stadium, one day before the derby against Universitario de Deportes. According to reports, the incident occurred during a 'banderazo' – a mass fan rally – that ended in a severe incident. Videos circulated on social media showed chaotic scenes of injured people on the ground and fans trying to help each other, while rescue forces operated at the scene.

