The correctional officer from chowchilla was just 22 years old and on the job less than one year.
Mark Pazin, Merced County Sheriff, says "The individual, Jose Rivera was attacked by one or more inmates. He suffered wounds and was taken to the hospital and succumbed to his injuries at 415 today."
In a news release the Bureau of Prisons says Rivera was attacked by two inmates in a housing unit. They were armed with homemade weapons.
In a written statement prison Warden Dennis Smith expressed regret to Rivera's family and vowed his attackers will be prosecuted to the fullest extent of the law. Because this is a federal prison local authorities have a limited role.
There are more than 11-hundred inmates in the high security portion of this prison another one hundred or so are in a satellite prison camp.
The victim, Jose Rivera, started last August. He was from Chowchilla.