The suspect was arrested on 15 September, before the claim of the FBI hack was made public. He has been detained since his arrest, and Dutch officials have warned that further arrests are possible.
According to a statement from Dutch police, the suspect is also alleged to have attempted to incite two murders abroad. Investigators reportedly found details of these plans on his laptop.
The ShinyHunters group claimed to have obtained highly sensitive information on every FBI agent, including names, roles, badge numbers, home addresses, and phone numbers.
Stan Duijf, the head of Dutch investigations into cybercrime, stated: "The ShinyHunters group is responsible for a large number of national and international victims. It is good that we have been able to arrest a suspect in the investigation into this group."
FBI Director Kash Patel thanked Dutch authorities on X, writing: "As we speak, FBI teams are actively working with partners to obtain and execute more leads in the ongoing investigation based on this arrest."
Brett Leatherman, assistant director of FBI Cyber, urged any remaining ShinyHunters members to surrender. "Other groups believed anonymity or their friends would protect them... but arrests have a way of changing who is willing to talk," he said.