Two infamous criminals from New South Wales were recently involved in a violent altercation at Goulburn’s Supermax Prison.

Newly released footage from 2022, obtained by 9News, reveals the intense fight between these rival inmates.

The incident began innocuously, with Talal Alameddine and an unidentified inmate appearing to take a casual walk together.

Security cameras documented their stroll, but the atmosphere quickly shifted.

As they circled the holding yard, tensions escalated, leading to a flurry of punches, kicks, and stumbling before a decisive blow was landed.

Alameddine was seen clutching his bleeding neck, then stripping down to his singlet as the confrontation continued.

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.