(CNN) Detectives in California have made an arrest in a 40-year-old unsolved killing after using modern DNA technology to test evidence from the case file. Sonia Carmen Herok Stone was a 30-year-old single mother living with her daughter in Monterey County when she was killed in 1981. She had worked as a merchandiser for Levi Strauss & Company, the Monterey County Sheriff's Office said in a news release. Late last year, sheriff's detectives and Deputy District Attorney Matt L'Heureux decided to reexamine Stone's case. They found several pieces of evidence that could be tested for DNA using technology that didn't exist in the 1980s , according to the sheriff's office.

Source: CNN August 18, 2021 02:03 UTC