New York City's Office of Chief Medical Examiner (OCME) has confirmed the identification of a second 9/11 victim through forensic genetic genealogy, an adult woman who was inside one of the Twin Towers when they were struck on 11 September 2001, in an announcement made on 15 October 2026.
The victim has not been named. Her family requested confidentiality. The identification follows a first confirmed in August 2026, also by the same OCME unit, also undisclosed. With 1,098 of the 2,753 people killed at the World Trade Center still unidentified 25 years on, both confirmations arrive as progress reports against a task far from finished.
One new name. A pipeline of 47 candidate DNA samples, 11 of them tested, and two identifications to show for it. Behind both of those numbers: 1,098 unidentified victims, a figure that has persisted for two and a half decades.
The technique now being applied to this problem was not built for mass-casualty identification. It was built for cold cases where every conventional forensic method had exhausted itself. That, it turns out, describes exactly where the 9/11 effort currently stands.
Why STR DNA Testing Has Reached Its Limits on 9/11 Remains
The identification problem has a specific technical origin: short tandem repeat (STR) analysis, the standard forensic DNA method, works by matching known genetic markers against a reference from a close relative, typically a parent, child, or sibling.
The method carries specific requirements. STR needs recognisable DNA. Much of what was recovered from the World Trade Center site no longer had it.
The combination of fire, compressive forces, and the conditions of the collapse degraded biological material past the threshold where STR can reliably function. That degradation compounds with time. OCME holds more than 100,000 DNA profiles in its databank, re-evaluated continuously as methods improve.
How Forensic Genealogy Traces 4th Cousins to Make 9/11 IDs
Forensic investigative genetic genealogy (FIGG) operates on a different model entirely.
Rather than matching markers with immediate family members, FIGG compares single nucleotide polymorphisms (SNPs) against public ancestry databases, identifying partial matches that can indicate a fourth or fifth cousin
A specialist FIGG squad within the New York Police Department then traces family trees from those leads, sometimes tracking lineages back to the late 1800s before arriving at a candidate identity.
FIGG produces identification leads that OCME then confirms through DNA comparison or other forensic methods. The technique can work on degraded samples, even and especially where conventional DNA comparison has reached its limits.
This October confirmation, a second application of the same method by the same forensic unit on the same type of material, begins to establish that FIGG can work here consistently. The August identification proved the approach could be applied to 9/11 remains; this one suggests it may hold.
For the first time, the remains of a 9/11 victim were identified using genetic genealogy, the New York City medical examiner and mayor announced in a joint statement. The woman, whose name was withheld, is the 1,654th of 2,753 victims of the attacks on the World Trade Center to be identified.
by u/claustrophobicdragon in UnresolvedMysteries
47 Samples, 11 Tested, 36 Remaining
Mark Desire, OCME's assistant director for forensic biology, told Newsday that 47 candidate DNA samples have been assessed as potentially suitable for forensic genealogy testing. Of those, 11 have been processed, producing the two identifications confirmed so far. Thirty-six candidate samples remain.
Alongside FIGG, new bone-scraping techniques are in development at OCME that may extend what can be recovered from long-degraded material. Jennifer Odien, OCME's assistant director for forensic anthropology, oversees the family notification process for confirmed identifications.
The scale of what this pipeline runs against is not abstract. According to Newsday, 1,655 of those killed on 11 September 2001 have now been identified.
A peer-reviewed retrospective of 477 unidentified human remains cases across North America, published in Forensic Science International: Synergy in December 2025, found that forensic genetic genealogy led to charges, convictions, or known offender links in 26.1% of applicable homicide cases.
The study examined cases that had already resulted in identification, so this figure reflects outcomes in documented successes rather than an overall identification rate. The study's population is also the broader unidentified remains field, not the 9/11 cohort specifically.
'A quarter century after the day that forever changed our world, we are keeping the promise to identify those who died at the World Trade Center in 2001,' said Dr. Jason Graham, New York City's Chief Medical Examiner, in an official statement on 24 August 2026, following the first identification.
'This sacred commitment is propelled by our dedication to apply the most innovative scientific techniques.'
Both families in the two confirmed cases have requested anonymity. Neither victim has been identified by name.
