Marsellos Wilder, a cruiserweight with a record of five wins from seven fights, appeared to attack insiders from Wilder's camp, claiming that "hate" and "money" had motivated them to "take you down" as part of a confusing rant on Instagram.

Wilder's younger brother then baffled fans by referring to tests carried out on the former WBC champion as an "autopsy", revealing that they had shown mysterious head damage sustained by the "Bronze Bomber" as he lost his title at the MGM Grand on February 22.

"It was discovered by doctors that my brother has a dent in the side of his head due to a blunt object struck against his head from his last fight," he said.

"No glove or fist was able to cause the damage, according to the autopsy. My daddy once told me if you pull a gun out on someone, you better kill them because if you don't, they are going to come back and kill you.

"The king is about to rise again. We coming for blood."

Wilder's comprehensive defeat culminated in a seventh-round technical knockout which the previously unbeaten 34-year-old blamed on the 40-pound costume he wore during his elaborate ring walk, drawing widespread public derision after using it as an excuse.

The giant knockout artist drew with Fury in their first meeting in 2018 and has activated a contract clause guaranteeing a third fight, that could potentially happen later this year.

Fans on social media reacted by mocking the brothers and questioning the possible implication that Fury had tampered with his gloves.