In Philadelphia, investigators are revisiting the 1987 murder of Marie Robinson, a 24-year-old woman found dead in her North Philadelphia apartment more than three decades ago, as the FBI's cold case unit deploys advanced DNA technology to reanalyze evidence that had gone dormant for years. The renewed investigation marks one of dozens of cold homicide cases now under review across Pennsylvania and neighboring states as federal authorities expand their forensic capabilities to address unsolved violent crimes.
Background
For decades, Robinson's family has waited for answers about her death. Police initially responded to the scene in November 1987, collecting physical evidence that sat unanalyzed as case files gathered dust in storage facilities across the city. Philadelphia alone has more than 300 unsolved homicides dating back to the 1980s and 1990s, according to police department records. The FBI's national cold case initiative aims to apply genetic genealogy and other advanced DNA techniques to these dormant investigations, giving families like Robinson's a potential path toward closure they had long abandoned hope of finding.
The Investigation
FBI cold case specialists have partnered with the Philadelphia Police Department's homicide unit to reexamine evidence from approximately 50 unsolved murder cases spanning from 1985 through 2005. Investigators confirmed they are pursuing leads in several of these homicides, though officials declined to identify specific victims or provide details about potential suspects pending active investigation status. The collaborative effort draws on federal resources and expertise in genetic genealogy—the same technology that has led to dozens of cold case breakthroughs nationwide over the past decade.
Key Takeaways
- FBI cold case units confirmed deployment of advanced DNA technology to review unsolved homicides from decades past, including cases in Philadelphia
- Philadelphia Police Department collaborating with federal investigators on approximately 50 dormant murder investigations spanning two decades
- Genetic genealogy and enhanced DNA analysis techniques being applied to evidence that was previously unanalyzable due to technological limitations
- Prosecutors indicated charges could be filed pending forensic analysis results expected within weeks for several cases under review in the Philadelphia jurisdiction
What's Next
Forensic analysts expect initial results from the DNA reanalysis within the coming weeks, which could determine whether investigators have viable leads or genetic profiles suitable for comparison against federal databases. The FBI has committed to providing regular updates to families of victims whose cases are included in the current review phase. Philadelphia courts are prepared to process any charges that emerge from the investigation, according to prosecutors familiar with the matter.