Rosa Martinez Machuca, 24, a woman and a Latina, was working her shift at the Target off Research Boulevard in North Austin on August 11, 2025, when the ordinary rhythm of collecting shopping carts in the parking lot gave way to chaos. In a sudden burst of violence, she was shot and later died at a hospital, one of three lives taken during an attack that police described as random.
The parking lot at 8601 Research Boulevard became the center of a sprawling crime scene that also claimed the lives of 65-year-old Adam Chow and his 4-year-old granddaughter. Police reports and local coverage identified Rosa Martinez Machuca, 24, as a Target employee and one of the victims, and community memorials quickly gathered around her name.
Investigators say the suspect, 32-year-old Ethan Nieneker, first targeted Rosa Martinez Machuca, 24, a woman, as she worked outside, then turned his gun toward the family in a nearby vehicle. What followed was a desperate sequence of attempted carjackings and collisions across the city as the suspect fled, assaulting others and abandoning vehicles before officers finally arrested him. Accounts describe a disjointed, feverish escape in which he was ultimately apprehended after crashing and being found naked, shouting religious claims, with officers using a stun device to subdue him.
In the days that followed, officials publicly corrected early misidentification to affirm the victim as Rosa Martinez Machuca, 24, a woman. Newsrooms and the Austin Police Department updated their statements, acknowledging the importance of naming her as she lived and was known by her community. Her fiancée and friends mourned her in interviews, describing a bright presence whose life was entwined with her workplace and her partner’s memories from adolescence onward.
Police booked Ethan Nieneker into the Travis County Jail, where he faces two counts of capital murder and one count of first-degree murder tied to the deaths that day, including Rosa Martinez Machuca, 24, a woman. Reporting indicates a combined multi-million-dollar bond and notes that detectives recovered a handgun traced to a family member, with authorities saying further charges could follow as the investigation continues. The case remains active in court records and city updates, but the heart of it is fixed: a sudden attack that ended three lives and left a city grasping for answers.
