The latest legal chapter in the long-running nationwide police raids is playing out at the High Court in Auckland.
Lawyers this week are making legal arguments about the police evidence, following the raids on 15 October 2007.
Among the 17 accused at court on Monday were veteran activist Tame Iti.
There were more than a dozen lawyers acting for the accused in court.
Strict suppression orders are in place for the week-long hearing.
Legal arguments are expected to focus on the admissiblity of police surveillance evidence, which makes up the bulk of the Crown evidence.
A trial is not expected before 2010.