The ruling concerns the right to legal representation and to a lawyer of two detained unaccompanied migrant children (12 and 14 years old) who, as minors, did not have the legal capacity to sign a power of attorney of a lawyer (this must be done by their legal representative and they had none assigned). The first instance court had not admitted for review the appeal against their detention order on the ground that the lawyer was not properly authorized by the children. The Supreme court, however, invoked the best interests of the child principle, appointed ex officio the lawyer chosen by the children as their lawyer in the case and admitted their appeal against the detention order for review.
Source: official link