More than 100 people suspected of financing terror activities have been forced to pay more tax as part of a collaboration between the Swedish tax agency and security police.
The project started around a year ago at the initiative of Sweden's national security services Säpo.
It has so far handed over a list of 400 people suspected of financing terror-related activities to the Swedish tax authorities, Skatteverket, who then examined their tax declarations.
Skatteverket is still working its way through the list, but has found signs in around 70 percent of the cases it has investigated to date that not enough tax has been paid. Newspaper Sydsvenskan reports that around 120 people have so far been told to pay up.