1. An existing child custody determination.
2. A request to do so from a court in a pending child custody proceeding.
3. A reasonable belief that a criminal statute has been violated.
4. A reasonable belief that the child has been wrongfully removed or retained in violation of the Hague convention on the civil aspects of international child abduction.
B. The attorney general acting pursuant to this section acts on behalf of the court and shall not represent any party.