 For NPR News in the Twin Cities, I'm Perry Finnelli. The Stearns County Sheriff says advanced DNA technology helped track down the parents of a newborn baby whose remains were found in a roadside ditch more than 40 years ago. Sheriff Steve Sojka says his office is closing its investigation into the 1980 death without filing any criminal charges. I think we're happy to bring a conclusion to a really old case and especially for a