Liga.net reports:

[https://news.liga.net/en/world/news/finland-announces-the-first-effect-of-the-border-fence-the-offender-wanted-to-escape-to-russia]

Finland announces the first effect of the border fence. The offender wanted to escape to Russia (sic)

Thanks to the fence on the Finnish border with Russia, the offender was detained. This was reported by the Finnish broadcaster Yle.

Last Thursday, the fence on the eastern border stopped an offender trying to cross the border for the first time. An alarm triggered by the fence helped border guards prevent a single person from illegally crossing the border from Finland to Russia. The incident occurred in the city of Imatra (South Karelia).

FNN thought the purpose of this fence was to keep Russians out, not to keep Finns in?

So who was this 'offender'?

A Russian spy? A salty-liquorice smuggler? Someone who just likes to climb fences? A moomintroll?