A 52-year-old inmate died Friday at the Idaho State Correctional Institution after an apparent late-night attack, according to the Idaho Department of Correction.
Prison staff were notified around 12:56 a.m. that Glenn Cox had been assaulted. They found him unresponsive on the floor of his cell, according to IDOC.
Medical staff started CPR while paramedics were called. Cox was pronounced dead at 1:45 a.m. The Ada County Coroner’s Office later confirmed he died of injuries from the attack.
The exact nature of the assault is unclear. The Ada County Sheriff’s Office is investigating the death as a homicide and considers Cox’s cellmate, 45-year-old Jim Junior Nice, a suspect.
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Nice is serving three life sentences for the 2005 murders of his three young children. The two were the only ones in the cell at the time of the fight, according to the Sheriff’s Office. IDOC said Nice has been moved to the Idaho Maximum Security Institution while the investigation proceeds.
Cox was serving time for two felony driving-under-the-influence convictions and would have completed his sentence in 2022.
ISCI is a 1,446-bed, medium-security men’s prison south of Boise.