"To the astonishment of the police and the Public Prosecution Service," the suspects also asked the undercover agents to extort and murder a person, according to the Prosecution Service. The contact led to a meeting where a deposit was made, according to the prosecution.
The arrests and the seizures are part of a worldwide crackdown on hidden online marketplaces on the Tor-network that started in 2013, the prosecution said.
The men who were arrested in the Netherlands are scheduled to appear before a judge on Friday.
Loek is Amsterdam Correspondent and covers online privacy, intellectual property, open-source and online payment issues for the IDG News Service. Follow him on Twitter at @loekessers or email tips and comments to email@example.com