Brazilian mixed martial artist Mateus Fernandes died after suffering a technical knockout loss in an amateur bout in Manaus, Brazil, on Saturday.
Fernandes faced Obed Pereira in a bantamweight bout at Remulus Fight, where he was dropped to a knee by a combination of punches from his opponent. Pereira landed one more blow on his down foe before the referee stepped in to halt the contest.
Fernandes died a few hours later at a local hospital after suffering multiple heart attacks. He was 22 years old. According to a report from MMAFighting.com, Fernandes was fighting as part of a social project that helps people battle drug addiction through martial arts.