We don't know if they broke the law or not yet.

Yle (national news) reports in https://yle.fi/a/74-20251890, choice sentences paraphrased to English:

> Considerable land and forest construction work continued illegally at Muhos and Kajaani data center sites for months before LVV (permit and supervision agency) intervened.

> Work has been against YVA (environmental protection) laws.

(I did not see a link to English version, so feel free to use your favourite translation tool if you don't speak Finnish and don't trust my translation.)

The illegality here seems to be determined by LVV, whose mission is primarily to guide in following environmental protection laws. They also have the power to stop the works when they are illegal or suspected to be so, as they did on Oct 6 in Muhos.

Both LVV and the police are investigating the case and we don't have their resolution yet, but we already do know that some laws have been broken.

> After the construction work was stopped, country manager of Google Finland, Antti Järvinen offered an apology for their actions.

Of course it is possible that the end result of the environmental protection process is that the actual construction work is permitted and can continue. In that case, the only law that was broken would be following the proper process. But it is also possible that the work is not, indeed, permitted, and the fines and other legal consequences are then presumably harsher.