CONMEBOL president Alejandro Dominguez rued a "sad day for South American football" and condemned those responsible for the violence which forced the suspension of the Copa Libertadores final second leg between River Plate and Boca Juniors.
Boca travelled across Buenos Aires on Saturday with the final tied at 2-2 after the opening game at La Bombonera, but their bus was showered with projectiles on the way to River's El Monumental stadium, with some smashing windows of the vehicle.
Eventually the bus arrived at the ground, but reports suggested three players had to be taken to hospital for assessment, while some were believed to have been affected by the use of pepper spray by police officials looking to disperse fans.