Advanced DNA Sequencing Identifies Two Men in Florida Cold Cases

Forensic DNA technology has helped investigators identify two men whose remains went unidentified for decades in separate cold cases in Hillsborough County, Florida.

Announced on 14 October 2026, the identifications involved cases dating back to 1982 and 2008. Investigators worked with forensic laboratory Othram to use advanced DNA sequencing and forensic genetic genealogy to generate new investigative leads.

In the first case, two fishermen discovered an unidentified man's remains in a lake near Tampa on 2 October 1982. The man had no identification, and his death was classified as drowning. Despite earlier examinations and investigative efforts, his identity remained unknown for more than four decades. Investigators eventually identified him as Robert William Hart.

The second case involved a man found in the Alafia River in Riverview on 14 February 2008. Despite efforts to establish his identity, the case remained unresolved for more than 18 years. Advanced DNA analysis and genetic genealogy helped investigators identify him as George Hayward Coy Jr., born on 19 February 1962.

In both cases, Othram scientists developed single nucleotide polymorphism (SNP) profiles from forensic evidence. Genetic genealogy analysis then produced leads that investigators followed up with additional inquiries to establish the men's identities.

The cases demonstrate how advanced DNA analysis can help resolve unidentified-person investigations when conventional methods have not produced an answer. Genetic genealogy provides investigative leads, however, and identities must be established through follow-up investigation.

According to the report, funding for the testing was provided through Florida Senate Bill 678, which supports advanced forensic DNA technology for identifying unknown individuals and advancing cold-case investigations.