How do I dispute an infringement that has been referred to the courts?
Once the offence is filed with the Ministry of Justice the matter is in their jurisdiction and enquiries must be directed to them.
Visit the Ministry of Justice web page on How to dispute a fine.
In some situations you can apply to the Ministry of Justice to have the matter returned to Police. You will need to ask for a 78B Application (PDF, 1.1MB) and provide evidence to support your application.