Alonzo Brown will not be eligible for parole until 2078 after admitting to three 2022 murders.

LAS VEGAS, Nev. — A Clark County judge sentenced 22-year-old Alonzo Brown to 56 years to life in prison after he admitted killing three men in separate Las Vegas shootings in 2022, ending a case prosecutors described as a months-long series of public attacks.

The sentence gives Brown a chance at parole only after decades behind bars. Prosecutors had once planned to seek the death penalty, but a plea agreement removed that possibility and also took life without parole off the table. Brown pleaded guilty to three counts of first-degree murder in the deaths of Tevin Alhashemi, 26, Paul Viana, 62, and Josue Chaparro-Montalvo, 36.

The killings began Jan. 18, 2022, outside an east Las Vegas apartment complex. Court reporting identified Alhashemi as the first victim and said he and Brown knew each other before the shooting. Prosecutors said the men had a dispute involving a stolen gun. That case remained unsolved for months while Brown, then 18, moved through the city. By spring, investigators would be looking at two more shootings along the same broad east valley corridor. At sentencing, Clark County Chief Deputy District Attorney Marc DiGiacomo said Brown made a clear choice. “He just decided he was going to become a serial killer,” DiGiacomo said.

The second killing came May 4, 2022, when Viana was shot while waiting at a bus stop. Prosecutors said Brown did not know him. They said surveillance video showed Brown watching and following Viana before the shooting. DiGiacomo described the attack in court as deliberate and close-range, saying Brown stalked Viana as he waited for a bus, then walked up and killed him. Police later said that video from the case was especially troubling because it showed conduct that appeared planned even though investigators found no clear personal motive. The location, a public transit stop, became one of the central facts in the case because Viana was killed in an ordinary public place.

The third killing came in June 2022, when Chaparro-Montalvo was shot after leaving a convenience store. Witnesses gave police a description of the suspect, and investigators began connecting that account to other evidence. Reports said Brown was later tied to the case after officers reviewed police video from a hit-and-run crash involving him and noticed clothing similar to what witnesses had described. Authorities then looked again at the earlier killings. The review helped turn three separate homicide files into one prosecution. Police said the pattern included victims attacked in public and, in at least two cases, people Brown had no known connection to before the shootings.

Brown denied being responsible when he was first arrested in 2022. In an interview at the time, he pushed back on the accusation that he was a serial killer and said he was not in a healthy mental state. “A normal, sane 18-year-old kid is not going to go ahead and wake up and go on a killing spree,” Brown said then. “I’m surely not an accused serial killer. I’m just a 19-year-old young man trying to figure out life.” The case then moved through competency proceedings before the plea brought the criminal case to sentencing.

At the sentencing hearing, prosecutors focused on the public nature of the attacks and the lack of a known motive for the final two killings. They said Brown did not erupt in a single moment of anger. Instead, they argued, he spent months choosing victims and avoiding capture. Police officials had made a similar point during a 2022 briefing, saying the investigation showed a suspect who appeared to watch a victim before the shooting. The evidence did not point to robbery, a fight or a shared conflict in the bus stop and convenience store cases. That absence helped shape the prosecution’s argument that the killings were random and predatory.

The sentence also marked a sharp turn from the early posture of the case. Prosecutors initially had a path to ask a jury for death if Brown had gone to trial and been convicted. The plea deal spared him that risk while still requiring a term that reaches deep into old age. Clark County District Court Judge Michelle Leavitt imposed the 56-years-to-life sentence on April 15. Brown received credit for time already served, but the parole date remains far away. Based on the sentence, officials said he will not be eligible for parole until 2078, when he would be in his 70s.

Family members of the victims faced the end of the criminal case after nearly four years of court hearings, investigation and delay. The three men were killed in different places and under different circumstances, but the final hearing placed their deaths into one record. Alhashemi was described in court reporting as someone Brown knew before the first shooting. Viana was waiting for public transportation. Chaparro-Montalvo was walking home after going to a store. Their names became the fixed points in a case that moved from street-level police work to a murder prosecution carrying one of the longest terms available under the plea.

Alonzo Brown addressed the courtroom before the judge imposed sentence, offering condolences to the families. The statement did not change the outcome. Leavitt’s sentence closed the trial-level case and left only the long prison term and any future appeal or post-conviction litigation. For now, Brown remains in custody under a sentence that keeps him imprisoned for at least 56 years.

Author note: Last updated May 8, 2026.