Diane McCarthy is the sister of Mary Louise Ronning, who went missing from Minneapolis in 1979.

Families of the missing are trying to seek closure for their loved ones.

The Minnesota Bureau of Criminal Apprehension held a DNA collection opportunity for nine people who are missing a family member. People had the opportunity to provide a DNA sample to be compared with people in the national missing persons database.

http://minnesota.cbslocal.com/2017/0...na-collection/