Forensic Investigative Genetic Genealogy Faces Legal Test in New South Wales

A significant legal challenge is unfolding in the New South Wales Supreme Court, as the Australian justice system prepares to evaluate the use of Forensic Investigative Genetic Genealogy (FIGG) in criminal proceedings. The case centers on 77-year-old Robert Kwan, who has been refused bail following allegations of sexual assault spanning several decades.

The Case Against Robert Kwan

Robert Kwan faces charges related to three historical sexual assaults: an incident involving an 11-year-old girl in western Sydney in 1991, a 16-year-old girl in Wollongong in 1996, and a 26-year-old woman in Dubbo in 2002. During a bail hearing on Friday, May 22, 2026, Justice Helen Roberts denied bail, citing the strength of the DNA evidence presented by the prosecution alongside additional circumstantial details.

Police allege that they successfully linked Kwan to all three offenses through the application of Forensic Investigative Genetic Genealogy. This marks the first time this specific forensic technique has been utilized in an Australian court, positioning the case as a potential landmark for future criminal investigations in the country.

Understanding Forensic Investigative Genetic Genealogy

Forensic Investigative Genetic Genealogy is a sophisticated analytical method that rose to international prominence in 2018. It was famously employed to identify Joseph DeAngelo, known as the “Golden State Killer,” who was responsible for a series of murders and rapes across California throughout the 1970s and 1980s.

The process involves the analysis of thousands of DNA markers to identify familial relationships between crime scene samples and individuals present in publicly available genealogy databases. By mapping these genetic connections—sometimes reaching as far as third or fourth cousins—investigators can identify potential suspects in cases that may have otherwise remained cold for decades.

Legal Scrutiny and Future Implications

While the prosecution relies heavily on this genetic evidence, the defense has signaled that the validity of the technique will be a primary point of contention. Sharyn Hall SC, representing Kwan, expressed concerns regarding the lack of judicial precedent for the technology within Australia.

“We don’t know how [police] made the link to Mr. Kwan,” Hall stated during the proceedings, noting that the defense has yet to receive the underlying DNA material. The core of the legal battle is expected to focus on the uniqueness and reliability of the DNA argument, as the court determines whether this investigative tool meets the rigorous standards required for admissible evidence.

Key Takeaways

• Legal Precedent: This is the first time Forensic Investigative Genetic Genealogy has been used in an Australian court, making the case a critical test for the technology’s admissibility.
• Historical Allegations: The charges against Robert Kwan involve three separate sexual assaults occurring in New South Wales between 1991 and 2002.
• Defense Strategy: The defense is challenging the methodology behind the police identification process, citing a lack of transparency and legal testing for the technique.

As the case progresses, the Australian legal community will be watching closely. The outcome of this trial could establish a definitive framework for how forensic genealogy is integrated into the nation’s justice system, balancing the potential for solving cold cases against the necessity of ensuring that new investigative methods hold up under strict legal scrutiny.