The Norwegian security agency Kripos stated that the cases and plantations could probably be connected to the ringleaders abroad. There are commonalities related to both: ties to the Vietnamese-Norwegian community, and the common way in which the plantations are built and supplied with electricity.VG: Fant «oppskrifter» og cannabisrester, 22. februar 2008 Both the equipment and the methods that were used in the system, and theft of electricity, the properties have similarities in many cases throughout the country.VG: Cannabis-gartnere ramponerte Roars kjeller, 4. mars 2008
