UFC flyweight Allan Nascimento died Monday from an apparent heart attack. He was 34.
The promotion announced his death without releasing additional details. Nascimento competed in the UFC's lightest division and represented the sport at a level most fans never see. Deaths among active or recently active fighters remain rare, though the physical demands of combat sports and weight-cutting practices have raised health concerns throughout MMA.
The UFC has not commented on the circumstances beyond confirming his passing.