Francisco Daniel Arriaga, a 25-year-old Hispanic/Latino male, was fatally shot in Tucson, Arizona, on June 12, 2005, after a night out at the Bum Steer nightclub on North Stone Avenue. According to public records and later court summaries, Arriaga had been in the club and was in the parking lot around the 2:00 a.m. closing time, talking on his cell phone when events suddenly spiraled into violence.
The crime was later recorded in national gun-violence databases as a fatal shooting in Tucson on that date, confirming his age and the location of his death.
At closing time, more than 150 people poured into the parking lot of the North Side bar, creating a crowded and chaotic scene. Witness accounts summarized in appellate records describe some kind of altercation breaking out in the lot, with pushing, shouting, and at least one person brandishing or firing a weapon. In the midst of this melee, Arriaga remained in the lot when shots were fired. He was struck twice by gunfire and collapsed, mortally wounded, in the parking area outside the club. Emergency responders and investigators were called to the scene, and the case immediately became a homicide investigation.
Detectives recovered a nine-millimeter handgun from the area around the club after the shooting. Forensic testing later showed that at least one of the bullets removed from Arriaga’s body had been fired from that recovered weapon. DNA testing on material taken from the slide and grip of the gun produced a profile that matched a Tucson man named Vernon Lee Bullock Jr. Several months after the killing, investigators interviewed Bullock on video. In that recorded statement, he admitted being present in the parking lot that night, acknowledged that he had fired a gun during the disturbance, and said that he had thrown the weapon away afterward. Those forensic results and his own admissions became central evidence tying him to the shooting that killed Arriaga.
Bullock, who was 29 at the time, was arrested and charged in connection with the homicide. Newspaper coverage from the Arizona Daily Star, later summarized in archival and index sites, describes him as a Tucson parolee who had been released from prison only months before the shooting, and who was “ordered back to prison” after being found responsible for killing a man outside a North Side bar. Those same press accounts, together with another archived clipping, explicitly identify the victim in this case as Francisco Arriaga, confirming that the anonymous “F.” in appellate records is Arriaga himself and that the shooting occurred outside the Bum Steer nightclub.
At trial, Bullock did not deny firing the weapon but claimed he had done so in perceived self-defense or in defense of others during the chaotic brawl in the parking lot. He testified that as he was leaving the nightclub, a fight erupted, he was struck in the head, and he believed shots were being fired at him and his friends. According to his account, a friend told him to get a gun because “people were shooting,” and he then fired two or three shots toward the group from which he believed the original gunfire had come. The jury, however, was instructed on self-defense, and ultimately rejected his justification claim.
Bullock was convicted of murder and received a prison sentence of 20 years. An appellate court later noted that this was the presumptive term for second-degree murder under Arizona law. His first conviction was reversed on appeal, leading to a retrial, but after the second trial he was again found guilty of second-degree murder and again sentenced to a 20-year term. In a 2010 memorandum decision, the Arizona Court of Appeals upheld that second conviction and sentence. The court’s opinion recounts the key facts of the case: the large crowd at the Bum Steer parking lot, Bullock’s decision to fire into that crowd, the ballistic match between the recovered bullet and the nine-millimeter handgun, the DNA link to Bullock, and his own recorded statement admitting that he fired and discarded the gun.
As a result, the only publicly identified suspect in the killing of Francisco Daniel Arriaga is Vernon Lee Bullock Jr., who was arrested, tried twice, and ultimately convicted of second-degree murder for the shooting outside the Bum Steer. There is no indication in available court records or news summaries that any additional suspects were charged in relation to Arriaga’s death; the case, as reported, centers solely on Bullock’s actions that night and his subsequent return to prison to serve the 20-year sentence for the homicide.
