I think I heard about this when it started in 2007, but the media didn't do a lot to keep me informed of it. New Zealand experiencing an "anti-terrorist" dragnet like those of the Bush and Obama administrations, but on entirely domestic issues:

http://en.wikipedia.org/wiki/2007_New_Zealand_raids

October 2012 story

Methodist Church's statement (.docx file)

The last link (not very comprehensible to a non-NZer on its own) is what informed me about it.