Rosa Martinez Machuca, 24, was working an outdoor shift collecting shopping carts in the Target parking lot at 8601 Research Boulevard in North Austin on August 11, 2025, when she was shot and later died at a hospital. Officers describe the attack as random and say the suspect then opened fire into a nearby vehicle, killing 65-year-old Adam Chow and his 4-year-old granddaughter as part of the same incident.

Police say the suspect, 32-year-old Ethan Nieneker, first targeted Rosa Martinez Machuca while she worked outside, then turned his gun toward the family in the nearby car before attempting a chaotic escape involving several attempted carjackings, collisions and assaults across the city. He was arrested after crashing, found naked, shouting religious statements and restrained with a stun device; authorities booked him into Travis County Jail on multiple murder charges. Investigators report recovering a handgun traced to a family member and say additional charges may follow.

Community memorials identified Rosa Martinez Machuca by name after an early misidentification was corrected, and her fiancée and friends mourned her as a bright presence connected to her workplace and partner. Does anyone have information about Rosa’s shift that day or saw activity in the Target parking lot on August 11?