UFC flyweight Allan Nascimento dies at age 34 after being found unresponsive in his sleep, according to the UFC and multiple outlets. Reports say he was discovered at home and pronounced dead at the scene following what the promotion characterizes as an apparent heart attack.

Several sources note that Nascimento is a veteran competitor and had most recently fought only weeks earlier. One report states his last UFC appearance is at UFC 119 in June, where he lost to Mitch Raposo by split decision. Other coverage describes his background in Brazilian jiu-jitsu, and notes that he compiled a professional record with a number of submission wins.

UFC-related reporting confirms the promotion announced his death on Monday, and other outlets say fellow fighters and public figures respond with tributes after his passing. While outlets differ in specific career details, they largely align on the circumstances of his death—sudden unresponsiveness in sleep attributed to an apparent heart attack—and his recent activity in the sport.