https://apnews.com/2d220865226a4a2e5fe315883abc4144

GREAT FALLS, Mont. (AP) — DNA evidence preserved after a 1956 double homicide and the use of forensic genealogy has helped a Montana sheriff’s office close the books on the 65-year-old cold case, officials said.

Investigators with the Cascade County Sheriff’s Office concluded Kenneth Gould — who died in Oregon County, Missouri, in 2007 — more than likely killed Patricia Kalitzke, 16, and Duane Bogle, 18, the Great Falls Tribune reports. Both were shot in the head.