French boxer Mourad Aliev stages ringside sit-in protest after Olympic 'injustice'

Super-heavyweight Aliev disqualified in the second round against Britain's Frazer Clarke for headbutting

Mourad Aliev of Team France reacts after losing by disqualification against Frazer Clarke of Team Great Britain during the Men's Super Heavy (+91kg) quarter-final on day nine of the Tokyo 2020 Olympic Games at Kokugikan Arena.

An overview shows France's Mourad Aliev waiting outside the ring after losing by disqualification against Britain's Frazer Clarke during their men's super heavy (over 91kg) quarter-final boxing match.

An overview shows France's Mourad Aliev (blue) and Britain's Frazer Clarke fighting during their men's super heavy (over 91kg) quarter-final boxing match.

France's Mourad Aliev reacts after losing by disqualification against Britain's Frazer Clarke.

Britain's Frazer Clarke reacts after winning after the disqualification of France's Mourad Aliev.

France's Mourad Aliev sits at ringside in protest at his disqualification.

France's Mourad Aliev reacts after losing by disqualification.

France's Mourad Aliev reacts after losing by disqualification against Britain's Frazer Clarke.

France's Mourad Aliev remonstrates with the referee.

Britain's Frazer Clarke has his cuts attended to after a clash of heads with France's Mourad Aliev.

France's Mourad Aliev stages a ringside sit-in after losing by disqualification against Britain's Frazer Clarke.

Britain's Frazer Clarke (red) and France's Mourad Aliev fight during their men's super heavy (over 91kg) quarter-final boxing match.

France's Mourad Aliev waits outside the ring after losing by disqualification.

Mourad Aliev of Team France reacts after losing by disqualification.

Mourad Aliev of Team France reacts angrily to journalists' questions.

France's Mourad Aliev gestures in the ring.

Mourad Aliev of France sits outside the ring in protest.

Mourad Aliev of France reacts after his disqualification.

A French super-heavyweight boxer lashed out at an "injustice" and sat in protest on the side of the ring after he was disqualified for headbutting in the Tokyo Olympics quarter-finals Sunday.

In what was the first major controversy in the boxing in the Japanese capital, Mourad Aliev was disqualified in the second round against Britain's Frazer Clarke.

Aliev, 26, sat beside the ring ropes afterwards, seething, and claimed that officials had admitted they had made a mistake.

"I sat down to protest against the unfairness for me," he said.

"I prepared for these Games for four years ... I really wanted to fight against the injustice, so that was my way to show that I don't agree with that decision."

He added: "So the judges went to discuss together to know what happened. They said that I would have won, however it was already written that I was disqualified so the decision cannot be unmade.

"It was already too late."

Aliev said that the referee had failed to give him any warning before the bout was called off.

"I was just stopped without any warning and they just told me that 'you lost' - just like that," he said.

"So I think it was an act of sabotage."

Clarke, who had cuts to both eyes, called the situation "confusing".

"The referee made his decision, that's what he's there to do. There's a bunch of great referees and officials here so you know we have to believe in what they do.

"I think they've done whatever they deemed to be correct."

Clarke said that he told Aliev "to calm down".

"I've been in these situations myself, often you're not thinking with your head, you're thinking with your heart and your emotions are all over the place," he said.

Controversial scoring is often a feature of Olympic boxing, but the Rio 2016 competition was marred by especially poor judging and an IOC taskforce took over running the sport at the Tokyo Games to prevent a repeat.