Two of the most notorious criminals in NSW have been caught in a violent brawl at Goulburn's Supermax Prison.
Footage of the fight between the rival inmates in 2022 has been released to 9News.
The encounter started as what appeared to be a friendly stroll for Talal Alameddine and another inmate, who cannot be identified.
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Security cameras captured the pair walking together before the mood changed.
They begin circling the holding yard and punches fly. There are kicks and stumbles before one man hits his mark.
Alameddine clutches at his bleeding neck before stripping down to his singlet and the fight resumes.
Guards break up the brawl and two shivs are found in the yard.
9News can't reveal the identity of the man who was charged over the brawl because he was a teenager when he carried out the ISIS-inspired murder of a Queanbeyan service station worker in 2017.
He is serving a 27-year sentence.
Alameddine was jailed for 17 years for supplying the gun used to kill Curtis Cheng at Parramatta Police Headquarters in 2015.
Alameddine, now 33, was forced to go to court to give evidence about the prison brawl but claimed he couldn't remember a thing.
"It was a bad period for me ... I was zombied out ... that medication, it zombies ya," Alameddine said.
He was even shown the video.
"Obviously I've seen it, but to say how it happened or what happened, it's hard for me to say."
The charged inmate argued he was acting in self defence and the judge found him not guilty.
He is not eligible for parole until 2046, while Alameddine is not eligible until 2029.
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