Lamonte Keys, 32, of Berkeley, died on May 28, 2026, after gunfire erupted during a birthday gathering at Ramona-Mathison Lake Park in Berkeley, Missouri. The afternoon celebration near Ramona Lake turned violent around 5:20 p.m. after a dispute reportedly began when children got too close to the lake. Women at the gathering yelled at men they believed were not watching the children, which escalated into a physical fight between two women and then a separate fight between two men.

Authorities say Devion J. Sneed retrieved an assault-style rifle from his vehicle and opened fire. Keys was struck and later died; three other people—a woman and two men—were also shot and survived. Chaos followed: some victims were taken by ambulance, one injured person reportedly drove for treatment and another woman crashed while trying to leave. Police found a vehicle submerged in the lake after a driver backing up to flee put the car in reverse; a man and an infant inside escaped.

Investigators reported the people involved knew one another, and prosecutors charged Devion J. Sneed by May 29, 2026, with first-degree murder and multiple related counts. No other suspects were publicly identified. Did anyone at the park that day see what sparked the original argument or the moments before the shooting?