Mario Palacios-Carrillo, 44, was shot and killed on the night of Saturday, September 13, 2025, inside a mobile home community in the 1400 block of Frontier Valley Drive in Montopolis, Austin. Officers arrived after 10:39 p.m. to reports of a shooting and found him unresponsive; he was pronounced dead at the scene at 10:56 p.m. His identity, age, and date of birth were later confirmed and funeral notices corroborated the date and place of death.

Investigators processed the scene that night, canvassed the neighborhood and interviewed witnesses who were nearby when gunfire rang out. Detectives concluded he was shot by an unknown assailant who slipped away into the mobile home park’s dark streets. In the weeks after the killing police described a suspect at large, interviewed multiple persons of interest and reviewed evidence, but no arrest or charges had been announced.

Who saw movements in that mobile home park on the night of September 13, or heard the shots and hasn’t yet contacted investigators?