gzt:networkn: If you are worried about the data collection, consider this could be your mother, or sister affected by this:
Saved I am presuming, by monitoring communications.
Far more likely by a combination of traditional border monitoring customs work, police work, concerned informants close to the group, and communications warrants. This type of focused work is very different to mass surveillance of everything - which is easily abused.
How far is Auckland and Christchurch from Sydney?