Widely reported in the press and on BBC news, that after a long investigation, two trading sites on the so called dark web have been closed down. (AlphaBay and Hansa)
Interestingly, it seems that Dutch authorities gained control of one site in June and kept it running to track down users and - coincidentally? - it was about that time that the value of bitcoin and etherium tumbled.
One report (out of many) here
http://www.telegraph.co.uk/technolog...rk-web-market/