Uruguay suspended all football activity last weekend over concerns relating to Izquierdo's health. The president of CONMEBOL, Alejandro Dominguez, paid his respects to the player and his family - as did fellow Uruguayan Luis Suarez.
Dominguez said: "South American football is in mourning," while Suarez added: "Pain, sadness, it is hard to explain. May he rest in peace. I wish a lot of strength for his family and friends."