Chaos erupted at a media day ahead of Tyson Fury's undisputed heavyweight title fight as 'The Gypsy King's dad headbutted one of the opposition team.
John Fury had blood running down his face and chest after the altercation with a member of Oleksandr Usyk's entourage amid wild scenes in Riyadh, Saudi Arabia.
The incident happened on Monday, five days before Tyson enters the ring to face the Ukrainian in the 'fight of the century'.
Morecambe's WBC Heavyweight Champion will battle WBA, IBF and WBO champion Usyk in the first undisputed world heavyweight title fight for almost 25 years.
During an intense confrontation between the rival teams at Monday's media day, members of Team Fury and Team Usyk squared up to each other, chanting 'FURY!' and 'USYK' to support their man.
Fury Snr went nose-to-nose with with one of Usyk's team and was pulled away by Team Fury colleagues including Heysham boxing trainer Bob Howard.
But then Tyson's father appeared to retaliate to something said to him by another Usyk supporter, headbutting the man in the face.
WATCH the footage of the headbutt here at Global Boxing TV.
'The Gypsy King', (pictured below), who was not involved in the incident, later reacted with shock when he saw his dad's bloody forehead, asking him: "How have you cut yourself like that?"
With blood on his 'Gypsy King' shirt, Fury's former heavyweight boxer dad, 59, spoke to Seconds Out YouTube channel after the altercation.
"Sincere apologies to everyone involved, it's just the way we are," said John Fury.
"Emotions and tensions are running high.
"Anyone knows if you come close into a fighting man's space, you're going to cop for summat, aren't you?
"I've had a thousand hidings in my life. It doesn't matter to me. What does matter to me, is respect for my son."
John Fury is pictured below at a recent Tyson Fury media day at Morecambe FC.
Alex Krassyuk, Usyk's promoter, told Boxing King Media: "This is not a time and place for aggression. The fight has to happen inside the ring.
"I had to wipe my shirt from Fury's blood. This is just Monday.
"I was with Usyk on Sky Sports, then some noise, and I see John is fighting with one of our security guys. Then something happens, I see John Fury is bleeding. It was almost out of control so I jumped in and said come on, friends, calm down, and I want to apologise for my guys.
"I thought initially that one of our guys hit John, but it was vice versa. This kind of behaviour does not give a good impression about us to the rest of the world."
Usyk told The Stomping Ground YouTube channel: "Crazy day, crazy week. For me, it doesn't matter. My focus is on the fight. Bad behaviour by Fury's father is problem only for Fury's team."
The Ukrainian boxer's team member Stanislav Stepchuk, who received the headbutt from John Fury, said he had only shouted Usyk's name at Fury Snr, and said he was "a little bit shocked".
Saudi Arabian authorities say no charges are being pressed and no further action will be taken at this stage.
The fight, billed as 'Ring of Fire', will be the first time the WBA, WBC, IBF and WBO heavyweight titles will have all been on the line, as well as the IBO, Ring Magazine, lineal and 'Riyadh Season' belts, and will crown the first undisputed champion since Lennox Lewis in 2000.
Both boxers are undefeated in their professional careers.
The 37-year-old Usyk (21-0) from Ukraine is the WBA, IBF and WBO champ, and is a former undisputed cruiserweight world champion and Olympic gold medallist.
The 35-year-old WBC and lineal champion Fury (34-0-1) has lived in the Morecambe area for more than 15 years and has been training for the fight at his gym at Morecambe Football Club.
The fight was due to take place in February but was delayed when Tyson suffered a bad cut over his eye while sparring.
Fury's friend and training partner, Morecambe featherweight Isaac 'The Westgate Warrior' Lowe, will also fight on Saturday's bill, taking on Hasibullah Ahmadi.
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