A 21-YEAR-old prisoner from the Maryborough Correctional Centre is fighting for his life after allegedly being struck on the head by a mop bucket full of water.
He was placed on life support in the Gold Coast Hospital, but that has now been switched off.
Together Union representative Ian Barber said that three other prisoners were now in isolation as a result of the attack.
"These buckets are big and heavy; they're pretty substantial weapons," he said.
"Fill them with water, and they're even heavier."
The inmate received some medical treatment after the alleged attack on October 8, but was later returned to his cell.
A staff member noticed the man was unwell, which prompted the man to be taken to Hervey Bay Hospital.
He was then transferred to the Gold Coast Hospital.
"I'm told that he is not expected to live," Mr Barber said.
"With the overcrowding going on in the correctional centre, it's a good thing they spotted that the guy was in trouble.
"My worry is, why did they bypass Sunshine Coast, and Brisbane to get to the Gold Coast?"
Mr Barber said it could have easily been a staff of the correctional centre on his deathbed in this instance.
"I'm surprised it was an inmate and not an officer," he said.
"Officers make easier targets."
The attack comes in a weekend filled with violent events at the prison.
Another separate incident on Saturday night resulted in an inmate also being taken to hospital.
The 50-year-old man was taken to Maryborough Hospital for treatment to lacerations to the head.
"From my understanding, he is in a critical condition too," Mr Barber said.
And on Friday, another inmate sustained a minor injury and needed medical attention on-site.
The Chronicle believes this one was sparked by a bite from a prison dog.
Yesterday, October 11, an injury was caused to an inmate who had his jaw broken by a blunt object.
The incidents have been referred to the Queensland Corrective Services Investigation Unit, a Queensland Corrective Services spokesperson said.
They also emphasised that no staff member has been hurt.
Mr Barber partly blamed prison overcrowding and prisoner boredom for the series of events.
"The overcrowding is building tension, accidents and the level of violence has increased," he said.
"The prisoners need something to aspire to, and keep them busy - it might just take the edge off things," he said.