The Supo report noted that Finland currently hosts a few hundred individuals who are part of terrorist or radical networks.
The security police said that in general, these individuals support the operations of extreme groups abroad. Some of them travel to conflict areas to lend their support to local activities.
These operatives have left Finland to participate in terrorist or extremist activities in countries such as Somalia and Syria. Supo said it is concerned about the people who return to Finland from these areas.
On the other hand, home-grown radicalism appears to have dwindled, Supo reported. However the organisation said it is concerned about the increasingly confrontational relationship between extreme right and anti-fascist groups.