To his aid, Niklas Delin has the search dog Zak who helps to search vehicles for drugs, weapons and ammunition.

- We basically seize every passport we work on, he says and continues:

- There is no technical equipment that beats a dog.

Cannabis is most common

In total, 5 563 drug seizures were seized last year, according to statistics from the Customs Administration. Of the drugs seized, cannabis accounts for the largest proportion.

According to statistics, 242 kilos of cannabis and 684 kilos of cannabis resin were seized in 2018.

- Cannabis is one of the most common drugs smuggled, especially when it comes to larger quantities, confirms Niklas Delin.

See how Niklas Delin is working to stop the drug import in the clip above. The series Look at Drugs is available on SVT Play.