Act on Penal Law on Narcotics (pdf), Ministry of Justice Swedish statutes in translation SFS 1968:64 21 July 2004
Legislation in Swedish on https://www.notisum.se/ (click: lagboken)
or through https://www.google.com/
(lag/year/number), or through Rixlex.
Some legislation is available in English on https://www.sweden.gov.se
For the Police and RPSFS guidelines see: https://www.police.se. The Police Act can
be found on https://www.legislationline.org/