These alleged rapists were free for 25 years. Here’s what caught them
Sydney Morning Herald
by Angus DaltonFebruary 15, 2026
AI-Generated Deep Dive Summary
A groundbreaking forensic technology called Forensic Investigative Genetic Genealogy (FIGG) has led to the arrests of two alleged rapists in New South Wales after their crimes went unsolved for decades. This innovative tool uses DNA data from commercial genetic tests to build extensive family trees, linking anonymous crime scene DNA to potential suspects through distant relatives. The technology played a crucial role in solving cases that had long eluded justice, including the 1990s sexual assaults on the Central Coast and a series of offenses spanning over a decade.
FIGG operates by analyzing single nucleotide polymorphisms (SNPs), which are single-letter variations in DNA sequences. Unlike traditional DNA profiling, which focuses on short tandem repeats (STRs) found in specific regions of the genome, Figg uses SNPs across millions of locations to create detailed genetic maps. This approach allows investigators to identify distant relatives of individuals whose DNA has been left at crime scenes, effectively connecting unsolved cases to potential suspects.
The arrests highlight the transformative potential of genetic genealogy in modern law enforcement. By leveraging publicly available DNA data from commercial ancestry tests, police can now solve cold cases and exonerate wrongfully convicted individuals with unprecedented accuracy. As Figg continues to be adopted globally, it promises to revolutionize criminal investigations, offering new hope for victims of unsolved crimes and their families seeking justice.
The successful use of FIGG in NSW underscores its significance as a tool for addressing historical injustices and enhancing public safety. By bridging the gap between forensic science and genealogy, this technology not only helps catch perpetrators but also ensures that no crime goes unaccounted for, even decades later. Its impact on law enforcement and justice systems worldwide is immeasurable, offering a new avenue for solving some of society's most challenging cases.
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Originally published on Sydney Morning Herald on 2/15/2026