Sergio Cepeda, 42, of Mission, Texas, died after being shot following a car crash in Alton on October 21, 2022. Witnesses reported hearing a loud crash and saw two men arguing before the driver, identified as 30-year-old Yair De Jesus Perez Hernandez of McAllen, shot Cepeda and drove away. Cepeda was found with a gunshot wound, taken to a nearby hospital, and later died.

Alton Police detained Perez Hernandez shortly after the incident. Officers located two handguns, marijuana, and cocaine in his vehicle. He has been charged with first-degree murder, unlawful carrying of weapons, possession of a controlled substance, and possession of marijuana, and remains in custody with arraignment scheduled in the near future. Cepeda is survived by his mother, Irma Cepeda, and his children, Abigail and Robert.

What further information can anyone who witnessed the crash or the argument share with investigators?