Tyson Fury and Deontay Wilder's final news conference descended into chaos as they clashed on stage just days before their heavyweight bout in Los Angeles.

After a packed final news conference in which Fury's words saw Wilder grow visibly more irate, the pair began pushing during a face off.

Their teams got involved, prompting 60 seconds of mayhem.

Fury removed his shirt as security intervened, before the fighters and retinues were asked to clear the stage.

What had started with both men hyping the Staples Center bout developed into an exchange of insults, with both men promising a knockout.

After opening speeches by each fighter, Fury seemed to grow into proceedings and elected to stand to answer questions, during which he questioned why American Wilder's profile was small in his homeland despite his status as WBC world heavyweight champion.

Fury says on Sunday, the whole world will know Wilder as the person who Fury knocked out.

Wilder ‑ who had earlier said Fury had made his name in a "small country" ‑ grew louder but remained seated.

But when the pair posed for head to heads, Wilder was shouting in his opponent's face, before a melee engulfed the stage.

The fight program starts at 3pm Sunday.

[Source: stuff.co]