The indictment includes three more people who are suspected of having been part of the cannabis league.
A man who allegedly stored the drugs.
Another who is said to have transported 25 kilos of cannabis to Stockholm, as well as a third man who is suspected of having stored a machine gun.
All six defendants, who are from Falkenberg and Laholm, are in custody.
Using the FBI's own chat app
The evidence includes chats from the ANOM service, which has been widely used by criminals for encrypted communications, but which was infiltrated and controlled by the FBI, which intercepted and shared the content with police authorities.