British police investigating the killing of a 13-year-old girl in 1964 have identified an "unusual feature" in DNA recovered at the scene of the crime.
The team had identified a number of families in the South Yorkshire area who bore this unusual feature in their DNA. Since that time they have been painstakingly working through these families obtaining details of their family trees and researching relevant individuals from the 60s.
Said Det Insp Sue Hickman: "We are still working through this list and we're grateful to members of the public for their assistance in this line of enquiry. We have been greatly helped by people undertaking their own research into their extended family to try and make things easier for us." [Link]