Five inmates at the Utah State Correctional Facility are facing aggravated assault and obstruction of justice charges after prosecutors say they attacked a gang dropout, ordered him to clean up his own blood, and left him without medical care for days. Joseph Granados, Jose Anguiano, Carlos Grijalva, Alejandro Moore and Kaleb Thiemann are accused of the assault, which investigators say was carried out because the victim was living in their section without paying rent.
According to a probable cause statement cited by ABC4 Utah, a Utah Department of Corrections investigator opened an inquiry into a gang-targeted assault at the facility on May 26, 2026. Investigators allege that a group of men entered the victim's cell, where Granados ordered him to get inside what he called “the house,” meaning the cell, before confronting him about the unpaid rent. Granados and Grijalva then allegedly punched the victim's face and head with closed fists.
The victim told investigators that Granados stabbed him near his left eyelid with a weapon during the attack, according to the same account. He said he suffered a painful bump in his eye socket and blurry vision in his left eye, and that he continued bleeding for several days afterward without receiving medical attention.
Cover-Up Allegations After the Attack
Court documents allege that after the assault, the group fled because the victim was bleeding heavily. Granados reportedly ordered the couple's cellmate to clean up the blood and use makeup to cover the victim's eye injury, but the makeup did not stop the bleeding, per the victim's account relayed in the same report. Granados also reportedly sent Grijalva to check on the victim afterward and ordered him to stay quiet and not leave.
Arrest warrants were ordered and issued for all five men, who remain in the custody of the Utah State Correctional Facility. Prosecutors allege that Anguiano, Grijalva, Moore, Granados and Thiemann are documented gang members, and the charges were enhanced both because of that alleged gang affiliation and because the men were previously convicted of violent crimes or first-degree felonies.
Granados, 43, is charged with aggravated assault by a prisoner, obstruction of justice, and tampering with evidence. Thiemann, 37, faces the same three charges. Anguiano, 33, Grijalva, 32, and Moore, 34, are each charged with aggravated assault by a prisoner and obstruction of justice.
Legal Enhancements Prosecutors Are Using
Aggravated assault committed by a state prisoner is a second-degree felony under Utah law, carrying a sentence of one to 15 years before any enhancements, according to the Utah Department of Corrections. Prosecutors are also relying on a state group enhancement law that raises a charge by a full degree when a crime is committed alongside two or more people or for the benefit of a gang, effectively turning some of the second-degree felonies into first-degree felonies.
Several of the men charged were already serving lengthy sentences for prior violent offenses. Moore was sentenced to 23 years to life for the murder of Anthony Bracamonte along Interstate 80 near Wendover, according to KSL.com reporting from March 2026. Granados was sentenced to three years to life in 2018 for attempted murder after a road-rage shooting in West Jordan in which he shot another driver in the neck and led police on a high-speed chase, per the same outlet. Grijalva was charged in 2015 with second-degree felony assault on a police officer after allegedly firing shots while fleeing in a stolen vehicle, reportedly telling arresting officers, “Next time I will aim better.”
A Pattern of Gang Violence Inside Utah Prisons
The Utah State Correctional Facility opened in July 2022 on a 200-acre complex in northwestern Salt Lake City, replacing the 71-year-old Draper prison as part of a $1 billion overhaul, according to the Utah Department of Corrections. Despite the modernized facility, the department has reported that roughly a quarter of the state's overall prison population is tracked as active or suspected members of Security Threat Groups, its formal term for prison gangs.
The department's own guidance states that housing decisions are based primarily on an inmate's behavior, medical needs, and programming rather than automatic separation by gang affiliation — a policy that can leave gang dropouts vulnerable to extortion demands and retaliatory violence inside shared housing sections. The facility has seen other violent incidents in recent years: in July, an inmate attacked a correctional officer, causing a head wound that required medical treatment, and both the Utah State Correctional Facility and the Central Utah Correctional Facility went on system-wide lockdown in August 2023 after a 15-inmate gang brawl involving weapons left five people hospitalized.
It remains unclear whether the victim in this case had been formally designated for protective housing before the alleged attack, or what security measures were in place to detect weapons and prevent the prolonged lack of medical care described in the charges.
