> Correctly, but the state must say what accuse you of They were informed when they where taken to the police statoin to be questioned.
> but won't say you exactly ... for the children protection
That is only regarding answering the media's questions. The parents are informed. The police are not allowed to give such information to the media in order to protect privacy rights of the children (and the accused parents if they wanted to)
> If I do something wrong, take me (to prison or whatever), not my kid
Their focus is to protect the kids and separate them from potential abusers until they have clarified the situation. You can't take the parents out of the home and leave the kids alone? The only choice is to put the children under temporary foster care until they either clear the parents or find some other arrangement. As a general rule they prefer to let the children live with their parents of course, but they have to make sure that it is safe to return.
The baby has been returned, but the older children are still in temporary foster homes. The parents are under investigation and the police will decide if they are going to press charges in a court hearing next month. The system has to take the children's rights seriously, so they can not return until their rights are protected.
BTW: This is not something that is specific to Norway. All Nordic countries have come a long way when it comes to protecting children's rights.
I do not have any connection to this case. I'm just someone who takes the rights of children seriously, even if their parents think they have the right to ignore them.
I'm sure that the parents do not mean them harm, but when the police gets a warning they have to keep the children's rights in mind. Parents who get the media's attention should not get special preferences. The law should be equal to everyone. That is why they follow the same procedure so that everyone is treated equally. If the investigation proves that the parents won't beat the children again, they may be returned.