The Swedish drug market has undergone major changes since it was last examined by Brå, 2007.
The players in the illegal market are becoming increasingly organized and professional.
Among other things, imports to Sweden have been streamlined by having representatives of the networks in transit countries for drug smuggling, according to the report.
In the past, the Netherlands and Spain, among others, have been singled out as such countries.
Criminal gangs "own" areas
Criminal networks now also more often strive for a monopoly on sales in a certain area - mainly in socially disadvantaged ones.
This leads to more violent conflicts between different criminal groups.
Who controls an area also changes faster than before, according to the report.
- At the same time, it is important not only to regard the drug market as characterized by violence and conflict.
What is most prominent in our material is rather different types of collaborations between individuals, groups and networks, says Katharina Tollin, investigator at Brå, in a press release.
E-commerce is growing
Availability has increased through sales via apps and social media, and more service-oriented delivery methods - such as drug delivery, according to the report.
Some of the drug sales have moved to the network - between 3 to 14 percent of the total market, according to Brås' estimate.
An example is a darknet site where customers' orders are sent by regular mail.
This has made it easier for people who do not have their own contacts to buy drugs.
An analysis of 10,000 buyers on the site shows that many of them live in sparsely populated areas in northern Sweden.
In addition, they have a Swedish background to a greater extent, and have higher incomes, than the average person convicted of minor drug offenses.
"Nobody in the drug market can feel safe"
At the same time, in the past year, several major arrests and prosecutions have been made as a result of police work against encrypted apps.
This has created increased insecurity and uncertainty for the drug trade, according to Linda H Staaf, head of Noah's intelligence unit.
"In the past, sellers in the market had a feeling of being inaccessible, but our intelligence work shows that no one can feel safe." she writes to SVT in an email.