Expert, report explain the complexity of the Dark Web, used to sell fentanyl

The Dark Web has been at the heart of an ongoing probe into an international drug trafficking operation, an investigation that started in Grand Forks.

The probe sprung from the death of an 18-year-old Grand Forks resident who overdosed on fentanyl citrate, a highly potent synthetic opioid, in January and has since stretched not only across U.S. borders, but across the borders of the traditional Internet, into the Dark Web.