Ekholmsskolan is one of the upper secondary schools in Linköping that chose to inform guardians after being contacted by the police.

- We get a lot of information about what the young people are up to and then it is important that we pass that knowledge on to guardians, because they are the ones who have the ultimate responsibility, says Anna Samuelsson, principal at Ekholm School in Linköping .

A school informs guardians about 'drug parties'.

Photo: Private

Occurs in all neighborhoods

According to the police, these parties, or "drug parties" as one school chose to call it, occur in all Linköping's neighborhoods.

And it is above all the drug 3-CMC crystal that the police want to warn about.

The drug spreads quickly and is very easily available.

- Today's young people are a market for so many different things and drugs are unfortunately one of them.

We adults must be vigilant, rather that we ask too many questions than too few, says Anna Samuelsson.

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In the clip: The addiction doctor on the risks of the internet drug crystal.

Photo: Pontus Stark/Illustration: Linnea Palmgren