I don't know the Finnish equivalent of this but this is in the neighborhood of negligent homicide in the US. An enterprising prosecutor could probably make a decent case for 2nd degree murder.
This is very clearly in "spend somewhere between 1 and 2 decades turning big rocks into little rocks" territory to my punishment-focused American lizard brain.
Could come under Felony Murder.
https://en.m.wikipedia.org/wiki/Felony_murder_rule
This definitely sounds more like it and I am happy to be this week's example of why non-lawyers shouldn't speculate about what a particular crime is or is not :)