UFC Flyweight Allan Nascimento Passes AwayTragic news: Allan Nascimento was found unresponsive and has passed away on August 3 from an apparent heart attack. The UFC community is in mourning. Details are emerging.Sources (2)UFC fighter Allan Nascimento, 34, dies of apparent heart attackespn.comUFC Fighter Allan Nascimento Dies at 34 from ‘Apparent Heart Attack’people.comUpdated Aug 4, 2026