A large, unsanctioned gathering in the 600 block of South 15th Street in Mount Vernon, Illinois, ended in tragedy just before 1 a.m. on July 27, 2025, when gunfire erupted. Zomarrius Williams, 20, of Mount Vernon, was one of two men killed; five others were wounded. Police said more than 100 people were present when shots rang out at 12:49 a.m., creating chaos as ambulances transported the injured to area hospitals.

Investigators initially made an early arrest when 22-year-old Jerria J. Smith of Mount Vernon was taken into custody on charges that included aggravated or reckless discharge of a firearm and obstruction of justice. Local reports later said Smith was among the wounded and prosecutors moved to dismiss the case against her. Authorities then arrested 26-year-old Jamaro J. Kemmerling of Mount Vernon, charging him with aggravated discharge of a firearm and unlawful possession of a firearm by a repeat felony offender.

Police have said they believe multiple shooters were involved and have urged anyone who attended the gathering to come forward with videos or information as the investigation continues. Did anyone at the event or nearby see what happened or record video that could help identify who fired?