DNA genealogy identifies 1973 Keys double murder suspect
By The BriefBrief
Monroe County Sheriff Rick Ramsay announced investigators have identified the man responsible for the 1973 double murder of New Jersey sisters Marguerite “Maggie” Jenkins and Mary Jenkins in the Florida Keys. The suspect was identified as David Allen Snyder, formerly of Key West, who died in 2008. The case was advanced using forensic genetic genealogy after new DNA markers were developed in 2018 from a partial male DNA profile.
WHO:David Allen Snyder; Monroe County Sheriff Rick Ramsay; Monroe County Sheriff’s Office Major Crimes Division; Florida Department of Law Enforcement
WHAT:Forensic genetic genealogy led to identification of the suspect in a 1973 double murder of two teenage sisters.
WHEN:Sep 2, 2026
WHERE:Monroe County, Florida
WHY:The identification was made possible by forensic genetic genealogy after detectives and FDLE developed additional genetic markers in 2018 from a partial male DNA profile.
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