Four people died and ten others sustained injuries during a mass shooting at a child's birthday party in Stockton, California, on February 20, 2026.

Gunfire erupted suddenly in a residential backyard, transforming a celebratory gathering into chaos as panicked parents desperately shielded young toddlers from flying bullets.

First responders quickly arrived at the horrific scene, rushing critically wounded victims to regional trauma centers while treating numerous traumatized family members.