An inmate was killed Saturday by a group of convicts and another four were were slightly injured by guards during an incident at a youth prison in the southern Dominican city of San Cristobal, according to officials.

Jose Joel Castillo Paredes, alias "Patepalo", 20, died after a knife attack by seven of his fellow inmates at the Najayo Menores detention center, the Attorney General's Office said.

The incident took place in the wee hours Saturday when a group of inmates broke into a neighboring cell bent on robbery, the AG's office said.

Authorities identified Castillo Paredes' attackers as Ambiorix Petito, Denis Omar Rodriguez Gervasio, Franklyn Perez Berroa, Josue Arned Almonte, Dioselin Moreno, Carlos Alfredo Santana and Angel Mejia Arias, all between ages 17 and 18.

The official report said that the detention center's security personnel intervened to end the conflict and caused slight buckshot wounds to inmates Victor Manuel Rosario, Carlos Gabriel Camacho, Franklyn Perez Berroa and Josue Adner Almonte, who were treated and returned to their cells.

The authorities did not say, however, in what way the attackers obtained the knives nor why the slain inmate, sentenced to prison for homicide, was kept in a center supposedly for offenders younger than age 18. EFE