If the child's welfare is at risk, the family court can order various measures to protect the child. This can go so far that the parents are deprived of custody or part of it.
Parental responsibility includes the right to demand the return of the child from anyone who withholds it from the parents or one of the parents without permission
In custody proceedings, the family court may issue an interim order for the return of a child if immediate intervention is urgently required to protect the child.
Protecting children and young people: Is a child or young person being neglected or abused? The professionals at the Child Protection Hotline can help.
If you, as a private individual, notice irregularities in a residential facility for children and young people, you can report this to the responsible authority.