Brazilian mixed martial artist Allan Nascimento has died at the age of 34 after suffering what the Ultimate Fighting Championship (UFC) described as an apparent heart attack in his sleep.
The São Paulo flyweight finished his professional career with 22 wins and seven losses, including 16 victories by submission. He competed six times in the UFC, winning four bouts, and spent almost two decades training at the Chute Boxe Diego Lima academy alongside former lightweight champion Charles Oliveira.