Man pleads guilty to 2016 Alexandria rape solved using forensic genealogy

Bjerke was one of the first offenders identified in Virginia using forensic genealogy, an increasingly common technique for solving cold cases where police have little evidence beyond DNA. Bjerke had no criminal history, and so his DNA was in no law enforcement database. But sperm left at the crime scene matched with relatives of Bjerke who had uploaded their genetic information to public genealogy databases.