On one level the police search of author Nicky Hager's home and their seizure of his electronic files can be argued as standard measures in a criminal investigation. A complaint of theft had been made and Hager had been identified as the eventual user of the stolen material. The missing information was email and social media data and therefore Hager's computers and devices could be suspected of holding it.
Hager's response has been standard, too, in its way. He has claimed a right to protect journalistic sources, forcing the police to seal the seized material and let him argue that right before a court.
Yet the case, with the police actions and the ensuing battle to prevent officers examining the material, are far from straightforward. In response to a complaint of theft - common old theft - five police officers spent the best part of a day searching the Hager home and taking away everything from computers to an iPod. Not because Hager was considered a "suspect" but because he could be a "witness" to the crime.
If every theft complaint made to police resulted in this kind of response, searches under warrants of houses and businesses would be constant and not much else would be achieved by our constabulary.
The theft complaint was made by Whale Oil blogger Cameron Slater, whose emails and social media chats formed the basis of Hager's pre-election book Dirty Politics. The book caused political problems for the National Party and in particular Slater's friend and former Cabinet minister Judith Collins. Slater claims his messages were stolen and Hager acknowledged they had been hacked, by a person unknown, and given to him unsolicited.