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During the 6th of December, 1991, Jennifer Harbison and Eliza Thomas, both 17, were finishing their shift at the dessert shop where they worked. Remaining for a ride home were Jennifer’s younger sister, Sarah Harbison, aged 15, and Sarah’s friend, 13-year-old Amy Ayers.

Moments before 12 AM, a fire at the business drew firefighters and police, who made a grim discovery: the four girls had been restrained, fatally attacked, and showed indicators of assault. The configration wiped out most of the forensic clues, aside from a cartridge that had rolled into a drain and minute samples of biological evidence, including material beneath Amy Ayers' nails.

The Case That Shook a City

These horrific killings profoundly shook the community in Austin and became one of the best-known unsolved mysteries in America. After years of false leads and mistaken arrests, the killings in time led to a U.S. law signed in 2022 that allows loved ones to request cold cases to be reinvestigated.

But the murders stayed unresolved for nearly 34 years – before this development.

Significant Progress

Law enforcement officials disclosed on recently a "significant breakthrough" driven by advanced techniques in firearms analysis and DNA analysis, announced the city's mayor at a news briefing.

The evidence indicate Robert Eugene Brashers, who was named after his death as a multiple murderer. Additional killings could be linked to him as DNA analyses continue to improve and widespread.

"The single piece of proof found at the crime scene has been linked to him," stated the head of police.

The case isn't closed yet, but this represents a "significant advance", and Brashers is believed to be the lone killer, police confirmed.

Families Find Answers

Eliza's sister, Sonora Thomas, said that her psyche was fractured following her sister was murdered.

"One half of my consciousness has been screaming, 'What happened to my sister?', and the remaining part kept saying, 'I will never know. I'll pass away without answers, and I have to be OK with that,'" she said.

When she learned of this development in the case, "those two parts of my thinking began merging," she said.

"Now I understand the events, and that relieves my anguish."

Mistaken Arrests Corrected

This development not simply bring closure to the victims' families; it also completely clears two individuals, who were teens then, who claimed they were coerced into giving false statements.

Springsteen, then 17 years old at the time of the killings, was sentenced to death, and Michael Scott, aged 15 at the time, was received a life sentence. Each defendant said they only confessed after hours-long interrogations in 1999. In 2009, they were released after their convictions were overturned due to legal changes on admissions lacking forensic proof.

Legal authorities dropped the prosecution against Springsteen and Scott in 2009 after a forensic examination, called Y-STR, indicated neither man corresponded against the genetic material left at the crime scene.

Modern Technology Solves Case

The Y-STR profile – suggesting an unidentified male – would ultimately be the decisive factor in solving this case. In 2018, the profile was sent for reanalysis because of improved methods – but a countrywide check to investigative bodies returned no genetic matches.

During the summer, Daniel Jackson working on the case in 2022, had an idea. Time had gone by since the ballistics from the cartridge had been uploaded to the NIBIN database – and in the years since, the database had been significantly improved.

"The technology has gotten so much better. I mean, we're talking like 3D stuff now," he stated at the media briefing.

The system identified a link. An open homicide case in the state of Kentucky, with a similar modus operandi, had the identical kind of cartridge. Investigators and a cold case expert met with the Kentucky detectives, who are continuing to investigate their unidentified investigation – and are analyzing evidence from a forensic kit.

Connecting the Dots

This development got Jackson thinking. Could there be additional proof that might match against cases in other states? He considered right away of the DNA profile – but there was a problem. The national DNA registry is the countrywide system for law enforcement, but the yogurt shop DNA was insufficiently intact and scarce to submit.

"I thought, well, several years have gone by. More labs are performing these tests. Databases are getting bigger. Let's do a countrywide check again," he explained.

He distributed the historic DNA data to police departments nationwide, asking them to check by hand it to their internal records.

They found another match. The DNA pattern aligned exactly with a sample from another state – a killing that occurred in 1990 that was resolved with the aid of forensic experts and a celebrated genealogist in 2018.

Identifying the Killer

The genealogist created a family tree for the offender and identified a kinship connection whose DNA sample pointed to a immediate family link – almost certainly a close relative. A judge authorized that Brasher's body be removed from burial, and his genetic material aligned against the crime scene sample.

Usually, this expert is puts behind her resolved crimes in order to focus on the following case.

"But I have {not been