Juan Izquierdo, defender for Nacional, passed away, his Uruguayan club said on Tuesday. Izquierdo fainted on the field last week after experiencing an abnormal pulse.

The 27-year-old had been undergoing medical treatment since collapsing during Nacional’s Copa Libertadores game against Sao Paulo on Aug. 22.

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In the 84th minute, Izquierdo collapsed to the ground unconscious, avoiding contact with any other players. After being transported off the field in an ambulance, he received medical attention at the Albert Einstein Hospital’s critical care unit.

The hospital said in a statement Izquierdo had died as a result of brain death following a cardiopulmonary arrest associated with cardiac arrhythmia.

“It is with the deepest sorrow and shock in our hearts that the Club Nacional announces the death of our beloved player Juan Izquierdo,” Nacional wrote on X.

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“We express our most sincere condolences to his family, friends, colleagues and loved ones. All of Nacional is in mourning for his irreparable loss.”

Uruguay suspended all football activity last weekend due to concerns over Izquierdo’s health.