Anonymous tip leads police to dismembered body in San Angelo case

An anonymous tip about a possible homicide in the 1400 block of Parker Street pushed San Angelo police into a grisly investigation that led detectives from a dumpster, to a trash truck, and then to a landfill. Police said the evidence trail began on June 24, 2026, when they received information that helped them zero in on a residence linked to 31-year-old Audrey Troncoso and 34-year-old Roland Matthew Sheppard.

Investigators said bloody clothing and a blood-stained piece of carpet found inside a trash truck were traced back to a dumpster at an apartment complex on Baker Street. From there, officers went to a nearby residence and detained Troncoso, who police said lived with Sheppard in a live-in relationship. Detectives said Sheppard was shot in the facial area and stabbed numerous times before he died. Police later said Troncoso confessed to killing him and trying to conceal and dispose of his remains.

Authorities said the search widened as detectives recovered remains from multiple locations, including the Republic Services landfill on Old Ballinger Highway. The sequence of discoveries turned the case into a sprawling recovery effort, with investigators following the disposal trail from the apartment complex to the truck and on to the landfill. San Angelo police Chief Travis Griffith said it was one of the most violent homicides in recent memory that his department had investigated.

Troncoso was booked into the Tom Green County Jail on June 24. One report said her bond was set at $2 million, and another said she had no prior arrests in Tom Green County. Police also said a second suspect, Mario Valdes Troncoso Jr., was arrested and charged with tampering with or fabricating physical evidence after authorities alleged he helped hide and dispose of the victim’s remains.

The case has moved quickly from a tip about a possible killing on Parker Street to a murder investigation built on physical evidence pulled from a trash truck and a landfill search. In a city police department authorized to employ 175 sworn officers, the investigation remains centered on the same trail that first started with one anonymous call.