EDMONTON -- Three men are in hospital after a stabbing at the Edmonton Institution on Saturday.
The incident happened around 12:15 p.m.
The men, aged 22, 23 and 27 were taken to hospital with serious injuries but in stable condition.
Correctional Services of Canada said the assailants had been identified.
A lockdown was ordered for part of the prison, and will remain in place until it is safe to resume normal operations.