Raub was tracked to Seattle, where he was living as a homeless transient and police knew him from his lengthy criminal record. Authorities discovered that Raub knew Kimball and had at one time lived at her home.
Augusta investigators coordinated with authorities in Seattle and used a fake "gum chewing survey" to get a new DNA sample from Raub.
"I don't know the exact details, but we obviously needed some up-to-date DNA from him and some bubble gum was the key to getting that," McCausland said.
Three decades later, investigators remained committed to finding justice for Kimball.
"Even though all of her relatives are gone--her house has even been torn down--we continued to work on her behalf and obviously are pleased it's arrived to this point," McCausland said. "This is the oldest cold case cracked in Maine, so there's great satisfaction here."