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A federal judge in North Carolina has sentenced Michael Fluckiger, a co-administrator of a notorious Tor-hidden child porn site to 20 years in prison.

Fluckiger pleaded guilty to running Playpen in December 2015, after being indicted in March 2015. His two fellow admins, David Lynn Browning, of Kentucky, and Steven Chase, of Florida, who were also prosecuted as part of the same case, and also have plead guilty, have not yet been sentenced.

According to prosecutors, the three men who ran the website are among the over 200 Playpen-related prosecutions nationwide. In order to identify many of the site’s users who were prosecuted, the FBI had to seize and operate the site for 13 days.