Maximum security prison can guarantee a killer will never kill again, right?

The Folsom Telegraph reports:

A California State Prison, Sacramento (SAC) inmate was found dead in his cell this morning, Feb. 12. Prison officials are investigating the death as a homicide.

At 11:10 a.m., Monday, Feb. 12, staff discovered inmate Juan Victoria, 48, unresponsive in his cell. Medical staff was summoned and a responding physician pronounced Victoria deceased at 11:22 a.m.

Victoria's cellmate David Acuna, 34, was placed in restraints and removed from the area. Acuna had minor injuries that showed signs of a possible struggle between the two inmates. He has been identified as a suspect.

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Acuna was received into CDCR custody from Sacramento County on Sept. 16, 2015, with a sentence of 39 years-to-life with the possibility of parole for first-degree murder with use of a firearm and arson of an inhabited structure with special circumstances.

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Activated in 1986, SAC is a maximum-security prison that houses approximately 2,100 general population inmates and employs about 1,700 people.

Of course, Acuna is presumed innocent until proven guilty and all that.  Conceivably it could be self-defense.  Even so, the incident demonstrates that incarceration does not fully incapacitate.