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On the 6th of December, 1991, Jennifer Harbison and her coworker Eliza Thomas, both seventeen years old, were closing up at the frozen yogurt shop where they were employed. Remaining for a ride home were Jennifer’s younger sister, Sarah Harbison, aged 15, and Sarah’s friend, Amy Ayers, who was 13.

Just before midnight, a blaze at the shop attracted emergency crews, who made a grim discovery: the young victims had been bound, murdered, and showed indicators of assault. The blaze eliminated nearly all evidence, aside from a bullet casing that had ended up in a drain and trace amounts of biological evidence, including material beneath Amy Ayers' nails.

The Case That Shook a City

The yogurt shop murders traumatized the city of Austin and evolved into one of the most infamous unsolved mysteries in America. Over many years of investigative roadblocks and wrongful convictions, the murders ultimately led to a U.S. law approved in the year 2022 that allows victims' families to petition cold cases to be reopened.

But the murders continued to baffle investigators for almost thirty-four years – up to this point.

Key Development

Police authorities revealed on this past Monday a "major development" driven by advanced techniques in bullet matching and forensic science, stated the Austin mayor at a news briefing.

The evidence indicate Robert Eugene Brashers, who was named posthumously as a repeat offender. Additional killings are likely to be added to his record as genetic testing evolve further and widespread.

"The sole forensic clue found at the crime scene has been matched to him," explained the head of police.

The murders remains open, but this is a "huge leap", and the suspect is thought to be the sole perpetrator, officials stated.

Closure for Loved Ones

The sister of Eliza Thomas, Sonora Thomas, expressed that her psyche was fractured after her sister was murdered.

"One portion of my brain has been screaming, 'What took place to my sister?', and the other part kept repeating, 'I'll never learn the truth. I will die not knowing, and I need to make peace with it,'" she recalled.

Upon hearing about this development in the case, "the conflicting thoughts of my thinking started coming together," she said.

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

Mistaken Arrests Corrected

The breakthrough not simply bring closure to the victims' families; it also completely clears two men, minors when arrested, who insisted they were pressured into giving false statements.

Springsteen, a teenager at the time during the crime, was given a death sentence, and Scott, aged 15 at the time, was sentenced to life. Each defendant said they gave confessions following marathon interviews in the year 1999. In the following decade, they were set free after their convictions were thrown out due to new precedents on confessions without forensic proof.

The district attorney's office withdrew the case against Springsteen and Scott in that year after a genetic test, referred to as Y-STR, indicated neither individual corresponded against the DNA samples found at the murder site.

Modern Technology Solves Case

This genetic marker – indicating an mystery suspect – would eventually be the key in solving this case. In 2018, the DNA profile was submitted for retesting because of technological advancements – but a countrywide check to law enforcement agencies found no matches.

In June, an investigator assigned to the investigation in 2022, had an idea. It had been since the bullet casings from the spent round had been uploaded to the NIBIN database – and in that time, the database had undergone major upgrades.

"The system has gotten so much better. Actually, we're using three-dimensional imaging now," Jackson commented at the news event.

The system identified a link. An unsolved murder in another state, with a identical pattern, had the identical kind of bullet casing. The detective and a cold case expert consulted the Kentucky detectives, who are actively pursuing their unidentified investigation – which involves analyzing evidence from a sexual assault kit.

Connecting the Dots

The apparent breakthrough made the detective wonder. Could there be further clues that might link with investigations elsewhere? He recalled instantly of the DNA profile – but there was a obstacle. The Codis database is the national DNA database for law enforcement, but the genetic material from the scene was insufficiently intact and minimal to upload.

"I thought, well, several years have gone by. Additional facilities are doing this. Registries are growing. I proposed a national inquiry again," Jackson explained.

He sent out the historic genetic findings to law enforcement agencies across the United States, instructing them to check by hand it to their own databases.

There was another hit. The genetic signature corresponded precisely with a sample from Greenville, South Carolina – a killing that occurred in 1990 that was closed with assistance from forensic experts and a well-known researcher in recent years.

Identifying the Killer

The researcher built a family tree for the murderer from that case and located a family member whose DNA sample suggested a direct relationship – probably a sibling. A judge authorized that the deceased individual be exhumed, and his DNA matched against the crime scene sample.

Usually, the genealogist is can move on from solved cases in order to focus on the following case.

"Yet I have {not been