October 16 (UPI) — Federal prosecutors unsealed a nine – count indictment Wednesday charging a 23-year-old South Korean man in connection with what the justice Department said is the world’s largest dark net child sexual exploitation website that was funded with Bitcoin.

Charges Chon gonci include conspiracy, money laundering and manufacturing, advertising and distribution of child pornography. Prosecutors are seeking the seizure of 24 bitcoins belonging to the man and extradition from Korea after he serves an 18-month sentence there.

“Dark net sites that profit from the sexual exploitation of children are among the most vile and reprehensible forms of criminal behavior,” assistant attorney General Brian Benchkowski said in a statement. “This administration will not allow a child predator to use lawless online spaces as a shield.

“The Ministry of justice remains firmly committed to working closely with our partners in Korea and around the world to save child victims and bring to justice the perpetrators of these heinous crimes.”

Officials said the investigation led to 337 global arrests, including 92 on various charges in the United States. The justice Department also named the accused in the United States.