The man was extradited from the United States to Sweden earlier this year.
"The man is suspected of having played a central and leading role in an extensive fraud operation that was conducted in an organized and systematic manner," says Public Prosecutor Anna Lilje in a press release.
The fraud operation is said to have defrauded people in Sweden of more than 60 million kronor between 2021 and 2023.
The fraudsters posed as bank employees and tricked victims into downloading a new BankID app, which they then controlled remotely to steal the money.
The man was extradited to Sweden following cooperation with US authorities.
