On the night of August 28, 2025, Fort Mill police found 21-year-old Johnny Wayne Martin Cook of Chester dead at Steele Street Park after reports of shots fired just after 10:30 p.m. He was found unresponsive and pronounced dead at the scene from a gunshot wound.

Investigators say two suspects were arrested: 18-year-old Jalen Daquavious Thames of Rock Hill and a 13-year-old male whose name was not released. Authorities allege the meeting at the park began as a marijuana transaction but was actually a planned robbery intended to steal a handgun Cook was known to possess. Charges include murder, criminal conspiracy, armed robbery, possession of a weapon during a violent crime, and possession of a stolen firearm. Prosecutors contend both can be held responsible for the killing because it occurred during the armed robbery; the juvenile has been moved toward being tried as an adult. Forensic evidence presented in court, including a palm print on a vehicle, has been described by prosecutors as linking Thames to the shooting.

Are there anyone who knew Johnny Wayne Martin Cook or who might have been at Steele Street Park that night with information for investigators?