India, April 17 -- The FBI has significantly escalated its forensic efforts in the abduction investigation of 84-year-old Nancy Guthrie, deploying advanced DNA testing techniques, including next-generation sequencing, to re-examine complex genetic evidence recovered from her Arizona home.

Nancy Guthrie Case Latest News: FBI expands advanced DNA analysis in Nancy Guthrie case

Officials are focusing on mixed DNA samples that contain genetic material from multiple individuals, which investigators believe could hold the key to identifying those involved in her disappearance.

Nancy Guthrie Case Latest News: Mixed genetic profiles complicate but strengthen probe

According to law enforcement sources, several DNA samples collected from the re...