A Hawke's Bay Regional Prison inmate is in a serious condition in hospital today after being attacked by fellow prisoners over the weekend.
The Department of Corrections said the man was "seriously assaulted" in the incident on Saturday.
Prison manager George Massingham said the assault has been referred to police and the department expected criminal charges would be laid against the perpetrators of the attack.
Corrections said it would not comment further on the incident given it was now being investigated by police.
A police spokesperson confirmed the assault was being investigated and said inmates were interviewed by officers today in relation to the incident.
Charges had yet to be laid and it was unclear when they would be, the spokesperson said.
Mr Massingham said Corrections had a zero tolerance policy toward prisoner assaults on staff and other prisoners.
"No assault is acceptable, however, it is an unfortunate reality that from time to time this will occur. We manage some of New Zealand's most difficult and challenging citizens. Therefore, violence can be a risk as many offenders resort to this behaviour as a means of resolving issues and of expressing themselves," he said.
"Understanding and managing this risk is a challenge common to all correctional jurisdictions."
Hawke's Bay Regional Prison, on Mangaroa Rd, southwest of Hastings, has capacity to house up to 682 minimum- to high-security male inmates.
In January, an inmate died at the prison after staff found him in his cell in an unresponsive state and were unable to revive him.
Police said at the time of the death that they did not consider it suspicious and had referred it to the coroner.
Prior to that, the last death in custody associated with Hawke's Bay Regional Prison was in 2011 when a 54-year-old inmate died in a Department of Corrections van while being transferred to a forensic unit in Wellington.
By Simon Hendery of Hawke's Bay Today
