Police and the Organised Financial Crime Agency have seized $2.5 million worth of property, as part of an operation targeting a Porirua drug operation.
Ten search warrants were carried out on Wednesday morning after a three month investigation into a group of people living in Porirua's Ascot Park area.
Detective Inspector Grant Wormald from the Organised Financial Crime Agency says 100 cannabis plants were seized, as well as more than 20 grams of methamphetamine.
Six properties have been seized, which police say have been purchased through profits made from criminal activity, and are worth a total of $2.5 million.
Nine people will appear in Wellington District Court on Wednesday charged with drug dealing offences.