Mario Nicolas Guzman, 32, was found shot in the head at his Tyler, Texas home on December 7, 2018. The scene was described as very graphic and investigators recovered multiple shell casings. Toxicology showed recent methamphetamine ingestion but that did not alter the cause of death.

Prosecutors later linked this killing to a man identified as Perdomo, who was already charged in another murder that occurred shortly after Guzman’s death. Ballistics evidence showed the same type of ammunition was used in both cases; there was no direct mention of fingerprints or DNA tying Perdomo to Guzman’s killing. During the January 2022 sentencing phase, jurors were shown graphic crime-scene photos and the prosecution portrayed Perdomo as a serial killer. Perdomo was convicted of Guzman’s murder.

If anyone knew Guzman, his routine, or saw activity near his home on or around December 7, 2018, please share what you know.