Robert Jay Martinez III, a 21-year-old Hispanic male, was shot and killed on January 19, 2020, at the Ventura bar on the San Antonio River Walk. A fight between two customers escalated and at least one person produced a firearm and began shooting inside the venue. Martinez died at the scene from a gunshot wound to the chest.

Witnesses said the shooter, identified as 19-year-old Kiernan Christopher Williams, had a verbal and physical confrontation with Martinez before the shooting. An arrest affidavit alleges Williams intentionally shot Martinez during the argument and then fired into the crowded bar, striking six other people. A second victim, 25-year-old Alejandro Robles, was shot in the back and later died at the hospital; four males aged 16 to 19 and a 46-year-old woman were treated for injuries.

After a 16-hour manhunt Williams was arrested near the 100 block of S. Zarzamora Street and charged with two counts of capital murder. During his arrest he told authorities he acted in self-defense, saying Martinez had threatened to kill him after their altercation. Anyone who was at Ventura that night or has information about the confrontation is asked to come forward.