The RCMP say the death of an inmate at the Atlantic Institution in Renous was a homicide.
Police were called to the prison on Monday morning just before 10:30 am, where a 27-year-old inmate was found badly injured in his cell.
He was later pronounced dead in the facility’s infirmary.
The family has identified the victim as Calvin Kenny, who was from Newfoundland and was serving a 12 and a 1/2 year sentenced for the 2016 death of Steven Miller.
The RCMP say the major crimes unit has taken over the investigation.