Correctional Service Canada says an inmate was taken to the hospital after being assaulted at the Atlantic Institution in Renous.
Staff evaluated the injured inmate and then transported the person to an outside hospital for treatment on February 7.
CSC said the inmate has since returned to the maximum‑security facility.
The RCMP and the institution are investigating the incident.
The assailant has been identified, and appropriate actions have been taken, according to CSC.
The agency added that the safety and security of staff, inmates and the public remains its highest priority.
The circumstances of the incident are being reviewed, and CSC stated it will take any measures it considers necessary to help prevent similar incidents.
