Significant Progress in 1991 Texas Yogurt Shop Murders Offers Hope for Unsolved Cases: 'There Exist More Victims Still Unidentified'.

Back on a Friday in December 1991, Jennifer Harbison and Eliza Thomas, both 17, were wrapping up at the dessert shop where they worked. Waiting for a pickup were Jennifer's sister, 15-year-old Sarah Harbison, and her friend, Amy Ayers, who was 13.

Just before midnight, a fire at the store attracted emergency crews, who found a horrific scene: the four girls had been tied up, killed, and showed signs of sexual assault. The blaze eliminated most of the forensic clues, except for a shell casing that had ended up in a drain and minute samples of biological evidence, including traces found in her nail scrapings.

The Case That Shook a City

The yogurt shop murders deeply affected the Texas capital and were branded as one of the most notorious cold cases in America. After years of investigative roadblocks and mistaken arrests, the killings in time contributed to a U.S. law approved in 2022 that enables families of the deceased to request cold cases to be reopened.

However the killings stayed unresolved for nearly 34 years – up to this point.

Significant Progress

Investigators revealed on recently a "significant breakthrough" made possible by new technology in firearms analysis and genetic testing, announced the city's mayor at a press conference.

Genetic matches suggest Robert Brashers, who was confirmed after his death as a multiple murderer. Further crimes are likely to be attributed to him as DNA analyses become more advanced and widespread.

"The single piece of proof found at that scene has been matched to him," said the city's police chief.

The murders isn't closed yet, but this represents a "significant advance", and the suspect is thought to be the sole perpetrator, officials confirmed.

Families Find Answers

Eliza's sister, Sonora Thomas, shared that her thoughts were divided when Eliza was killed.

"One portion of my mind has been demanding, 'What occurred to my sister?', and the other half kept saying, 'I'll never learn the truth. I'll go to my grave unaware, and I need to make peace with it,'" she recalled.

After discovering about this breakthrough in the investigation, "those two parts of my mind started coming together," she explained.

"I know now what happened, and that relieves my anguish."

Wrongful Convictions Overturned

This development not simply bring closure to the loved ones; it also fully exonerates two individuals, who were teens then, who claimed they were coerced into confessing.

Robert Springsteen, who was 17 at the time of the killings, was sentenced to death, and Michael Scott, a 15-year-old then, was sentenced to life. The two asserted they gave confessions following hours-long interrogations in the year 1999. In 2009, both men were set free after their verdicts were thrown out due to court rulings on admissions absent forensic proof.

The district attorney's office abandoned the charges against the defendants in 2009 after a genetic test, called Y-STR, showed neither suspect matched against the genetic material recovered from the murder site.

The Investigation Advances

This genetic marker – pointing to an mystery suspect – would eventually be the key in resolving the murders. In recent years, the DNA profile was sent for reanalysis because of scientific progress – but a nationwide inquiry to other police departments yielded no results.

In June, the lead detective working on the investigation in 2022, came up with a thought. Several years had passed since the bullet casings from the spent round had been entered to the NIBIN database – and in the interim, the system had been significantly improved.

"The software has gotten so much better. Actually, we're talking like 3D stuff now," he said at the press conference.

There was a hit. An open homicide case in the state of Kentucky, with a identical pattern, had the matching variety of cartridge. Jackson and a cold case expert met with the Kentucky detectives, who are continuing to investigate their open file – and are analyzing evidence from a rape kit.

Building a Case

The new lead prompted further inquiry. Was there additional proof that might correspond to crimes in different locations? He considered right away of the genetic testing – but there was a problem. The Codis database is the national DNA database for police, but the genetic material from the scene was too fragmented and limited to upload.

"I thought, well, it's been a few years. More labs are conducting this analysis. Databases are getting bigger. We should conduct a nationwide search again," Jackson stated.

He sent out the years-old genetic findings to law enforcement agencies around the country, requesting them to review individually it to their local systems.

There was another hit. The genetic signature matched perfectly with a DNA sample from a city in South Carolina – a killing that occurred in 1990 that was closed with assistance from a genetic genealogy company and an expert in genetic genealogy in 2018.

Building a Family Tree

The researcher created a genealogical chart for the murderer from that case and found a family member whose biological evidence indicated a direct relationship – probably a brother or sister. A court official authorized that Brasher's body be dug up, and his biological samples corresponded against the crime scene sample.

Normally, the genealogist is puts behind her solved cases in order to concentrate on the new mystery.

"Yet I have {not been