Story here from 2/15/18:
https://www.dea.gov/divisions/hq/2018/hq021518.shtml
Interesting excerpt:
Further examination of the Hansa Market data revealed illicit drug purchase information identifying U.S. and Dutch individuals, resulting in numerous face-to-face doorstep visits by police (so-called "knock and talks") to suspected opioid buyers throughout the U.S. (Operation Decrypt)
Probably all FUD... anyone get a knock? Sounds like they are targeting H & fent people.
Nothing ruins a good opioid high like a knock and talk with the feds.