On the afternoon of May 28, 2026, 35-year-old Katrina Wheeler of Seguin, Texas, was shot and killed while putting groceries into her vehicle in the Walmart parking lot at 550 S. Highway 123 Bypass. Officers arriving at about 4:50 p.m. found Katrina with multiple gunshot wounds; she was pronounced dead at the scene. Her 37-year-old brother Pito was also shot and seriously injured, then treated at the scene and airlifted to a San Antonio hospital with non-life-threatening injuries.

Authorities identified 42-year-old John Wheeler, Katrina’s estranged husband, as the suspect. He fled the parking lot but was located about 30 minutes later outside Seguin; a low-speed pursuit ended in the 3000 block of FM 775, where he was arrested. Two young children were found in his vehicle at the time. John Wheeler was booked into the Guadalupe County Jail on charges of murder and aggravated assault with a deadly weapon.

Court and arrest records noted a history of domestic violence: Katrina filed for divorce in February 2026 and had a protective-order hearing scheduled for early June. Records also show prior violent convictions for John Wheeler, including a 2021 Bexar County conviction for an assault on Katrina involving a wooden ax handle. Katrina was a mother of five, described by family as devoutly Christian and devoted to her children. The investigation remains ongoing.

If anyone knew Katrina, her routine at that Walmart, or saw the events on May 28, please share information that might help the ongoing investigation.