Crime against human rights?

The State of South Korea has filed a complaint against the Finnish police for crimes against the human rights for their treatment of two South Korean diplomats.

The diplomats arriving on the train from Russia locked themselves in to their compartment and refused to come out. I do not know what the disagreement was about from the beginning, but is this not ridiculous?

Anyone arriving into a country denying showing identification to the customs or in some other way refuse to co-operate with the authorities, is that not a crime in itself, no matter if the persons in question happens to be diplomats or just ordinary citizens? And they can not stay on the train in their compartment for ever and after either, they would have had to come out eventually anyway. Or did they think that?