Earlier today, it was confirmed that former UFC light heavyweight title contender Anthony 'Rumble' Johnson has passed away.

The cause of death was organ failure brought on by non-lymphoma Hodgkin and hemophagocytic lymphohistiocytosis, a rare disease of the immune system.

Johnson's death was reported on social media on Sunday by Bellator MMA. He has reportedly been ill for over a year

The fighter was known as one of the most dangerous boxers in the sport and competed in the UFC at welterweight, middleweight and light heavyweight.

One of his biggest fights was when Anthony Johnson made his UFC debut on June 12, 2007 in Hollywood.

One of Johnson's closest friends was former UFC welterweight champion Kamaru Usman, who said he was a private person who tried to keep his condition a secret.

Johnson retired from the UFC in 2017 after losing his second belt to Cormier, but made a brief return with Bellator in 2021 before his health deteriorated

However, Johnson's manager told ESPN in late October that he was "not doing well right now" and was "going through some health problems."

Former UFC star Anthony Johnson dies at 38 after battle with illness