Zomarrius Williams, 20, a male from Mount Vernon, Illinois, died on July 27, 2025, after gunfire erupted just before 1 a.m. at a large, unsanctioned gathering in the 600 block of South 15th Street; he was Black/African American. Police reported that more than 100 people had been present when shots were fired, leaving two men dead and five others wounded.
Williams was identified alongside 26-year-old Demonta Woodward of Mounds, and local reports noted Williams’ death early that morning in Mount Vernon.
In the chaotic hours that followed, investigators began piecing together what happened as ambulances ferried the injured to area hospitals. Initial statements from authorities emphasized the scale and confusion of the scene, along with the rapid spread of panic through the crowd. By the next day, police publicly named Zomarrius Williams, 20, male, and detailed that the gunfire had broken out at 12:49 a.m., a timeline they later repeated while urging witnesses to share videos or information that might clarify who fired and why.
Within forty-eight hours, an early arrest offered the first glimpse of a path forward: officers took 22-year-old Jerria J. Smith of Mount Vernon into custody and announced charges that included aggravated or reckless discharge of a firearm and obstruction of justice. Authorities stressed that the investigation was in its infancy and that more arrests were likely as they sifted through tips and footage from the scene.
As detectives pressed on, the narrative shifted. Prosecutors moved to dismiss the case against Jerria Smith, with local reports noting she was among the wounded, and police announced the arrest of 26-year-old Jamaro J. Kemmerling of Mount Vernon. Kemmerling was charged with aggravated discharge of a firearm and unlawful possession of a firearm by a repeat felony offender. Investigators said they believed multiple shooters were involved and signaled that further arrests and charges were anticipated as evidence developed.
City leaders and residents, jarred by the scale of the violence, publicly called for accountability and cooperation. Police repeatedly asked anyone who attended the gathering to step forward, share what they saw, and submit any recordings that could help reconstruct the moments before and after the shots rang out. The appeals carried the weight of a community grieving Zomarrius Williams, 20, male, and determined to see the investigation through to answers and justice.
