A 29-year-old developer, suspected of being involved in the sanctioned Tornado Cash protocol, has been arrested in Amsterdam on Friday, according to a release by the Fiscal Information and Investigation Service (FIOD).

Tornado Cash is an ethereum-based crypto mixing service that allows users to gain a cloak of anonymity when transferring crypto-assets. On Monday, the service was sanctioned by the U.S. government for assisting criminals in laundering stolen money.The suspect will be brought before an examining judge in Den Bosch at 11:30 local time on Friday, the FIOD told CoinDesk.FIOD began investigations in June, multiple arrests have not been ruled out. The investigation are being led by the Public Prosecutor’s Office for serious fraud, environmental crime and asset confiscation.FIOD is also giving "extra attention" to decentralized autonomous organizations (DAOs) that my facilitate money laundering, they told CoinDesk.

UPDATE (Aug 12, 11:30 UTC): Adds that suspect will be brought before a judge and that FIOD is looking at DAOs.