Chapter 1 - Scope of application of the criminal law of Finland
Section 5 - Offence directed at a Finn
Finnish law applies to an offence committed outside of Finland that has been directed at a Finnish citizen, a Finnish corporation, foundation or other legal entity, or a foreigner permanently resident in Finland if, under Finnish law, the act may be punishable by imprisonment for more than six months.
Section 6 - Offence committed by a Finn
(1) Finnish law applies to an offence committed outside of Finland by a Finnish citizen. If the offence was committed in territory not belonging to any State, a precondition for the imposition of punishment is that, under Finnish law, the act is punishable by imprisonment for more than six months.
(2) A person who was a Finnish citizen at the time of the offence or is a Finnish citizen at the beginning of the court proceedings is deemed to be a Finnish citizen.
(3) The following are deemed equivalent to a Finnish citizen :
(1) a person who was permanently resident in Finland at the time of the offence or is permanently resident in Finland at the beginning of the court proceedings, and
(2) a person who was apprehended in Finland and who at the beginning of the court proceedings is a citizen of Denmark, Iceland, Norway or Sweden or at that time is permanently resident in one of those
countries.
Section 7 - International offence
(1) Finnish law applies to an offence committed outside of Finland where the punishability of the act, regardless of the law of the place of commission, is based on an international agreement binding on Finland or on another statute or regulation internationally binding on Finland (international offence). Further provisions on the application of this section shall be issued by Decree.
(2) Regardless of the law of the place of commission, Finnish law applies also to a nuclear explosive offence or the preparation of an endangerment offence that is to be deemed an offence referred to in the Comprehensive Nuclear Test Ban Treaty (Treaties of Finland 15/2001) (841/2003).
(3) Regardless of the law of the place of commission, Finnish law applies also to trafficking in persons, aggravated trafficking in persons and an offence referred to in chapter 34a committed outside of Finland. (650/2004)
EDIT.