Sweden’s Penal Code (1962), as amended in 1998, provides that “depriving civilians of their liberty in contravention of international law” is a crime against international law. 

Sweden’s IHL Manual (1991) considers that any person arrested, detained or interned for actions related to the armed conflict shall be informed promptly, in a language he or she understands, of the reasons why these measures have been taken. The manual considers Article 75 of the 1977 Additional Protocol I to be part of customary international law.