Isiah Bo'Cage Vos, 39, who has already spent more than two decades behind bars for a 2004 killing, was hit Wednesday, March 18, with a new batch of charges tied to a March 2025 disturbance at the Utah State Correctional Facility. Prosecutors filed a second‑degree felony count of making a threat of terrorism, third‑degree felonies for rioting and damaging a cell, and misdemeanor counts of assault on and interference with officers. The filing landed just one day after Vos stepped in front of the Utah Board of Pardons and Parole to argue for release on his original murder sentence.
Charges, allegations and timing
Charging documents, as reported by KSL, say the incident unfolded over several days, March 22 to 24, 2025, after corrections staff told Vos and his brother they would no longer share a cell. Prosecutors allege Vos threatened staff, saying he would "make one call to the yard" and that officers "won't be going home tonight," then joined his brother in barricading a sub‑dayroom and smashing a sprinkler head, which flooded the housing unit. According to the report, the Salt Lake County District Attorney's Office has asked that Vos be held without the possibility of posting bail while the new case is pending.
Conviction history and sentence
Vos was convicted in 2005 of shooting and killing Jeffrey L. Maestas and received a sentence of six years to life in prison, according to contemporaneous reporting by the Deseret News, which notes the killing took place in October 2004. He has remained in state custody since that conviction and has accumulated disciplinary write‑ups and later criminal allegations while incarcerated.
Parole hearing, then charges
On Tuesday, March 17, Vos appeared before the Utah Board of Pardons and Parole and told board members he had completed prison programming and had gone a year without disciplinary write‑ups, according to KSL. He described the March 2025 episode as a "standoff" and insisted he had not assaulted anyone, pointing to family crises and a strained relationship with a deputy warden as context. The full parole board has not yet issued a decision on whether he will be released on the original murder case.
Legal implications
Under Utah law, threatening to intimidate or coerce a government unit can qualify as a threat of terrorism, a crime outlined in state statute that labels some threats as second‑degree felonies, according to the Utah Legislature. The new filing against Vos includes a habitual‑offender enhancement attached to the terrorism count, which could increase his potential sentence if he is convicted. Prosecutors state the case will move forward in Salt Lake County's Third Judicial District and are asking the court to keep Vos in custody without bail while the charges are resolved.
