UFC fighter Allan Nascimento died at the age of 34 after suffering an apparent heart attack in his sleep, the organization announced Monday. Nascimento was found unresponsive on August 3rd.

Despite the efforts of medical personnel, he was pronounced deceased at the scene. The UFC extended its condolences to Nascimento's family, friends, teammates, and loved ones.

Nascimento's last fight was on June 20 in Las Vegas, where he lost a split decision to Mitch Raposo at UFC Vegas 119. He was born in Sao Paulo and compiled a professional record of 22 wins and 7 losses.

It comes just six weeks after the Brazilian (left) lost last fight in Las Vegas on June 20

During his career, Nascimento, known as 'Puro Osso', competed in promotions such as RIZIN, Legacy FC, and Dana White's Contender Series. He joined the UFC in 2021, winning four of his six fights within the organization. He earned Performance of the Night bonuses for submission victories over Carlos Hernandez and Cody Durden.