Adrian Barbosa

In the early morning hours of September 2, 2023, Adrian Barbosa, a 36-year-old Hispanic man from New Braunfels, Texas, was fatally shot in downtown Seguin. At approximately 2:11 a.m., officers with the Seguin Police Department responded to reports of gunfire in the 100 block of North River Street. When they arrived, they discovered Barbosa on the ground with a gunshot wound.

First responders, including police and fire department personnel, attempted lifesaving measures, but Barbosa succumbed to his injuries. A Justice of the Peace pronounced him dead at the scene. The Seguin Police Department’s Criminal Investigation Division immediately began an investigation into the homicide.

The investigation quickly led authorities to a suspect. Isaac Mesa Jr., a 24-year-old also from New Braunfels, was identified as the shooter. Deputies from the Guadalupe County Sheriff’s Office took Mesa into custody, and he was subsequently arrested and booked into the Guadalupe County Jail on a charge of murder. A judge set his bond at $1 million.

The case against Isaac Mesa Jr. proceeded to a jury trial in the 456th District Court in Guadalupe County. After hearing the evidence, the jury convicted Mesa of murder for the shooting death of Adrian Barbosa.

Following the guilty verdict, the jury began the punishment phase of the trial to determine Mesa’s sentence. According to the last available report, the jury had not yet reached a decision and was scheduled to resume deliberations.