File pic Photo: RNZ / Cole Eastham-Farrelly
Police are refusing to release risk assessments around their tapping into automated number plate recognition cameras.
Police tap into two private networks of thousands of cameras focused on carparks and shopping areas to help catch thieves, among other things.
They withheld the assessments on the grounds of commercial sensitivity.
Police also withheld the feedback they had from the Privacy Commissioner in August about a trial of extra functions on one of the two platforms, called Auror.
They said this was to maintain free and frank exchange of opinions.
They released a summary of a privacy impact assessment on the cameras, which RNZ already had, but refused to release the whole document.