Police have arrested 22 people allegedly involved in the sale and supply of methamphetamine in Northland. 

The arrests were part of their methamphetamine investigation called Operation Ghost. 

Police carried out search warrants across Whangarei, Dargaville, Kawakawa, Moerewa, Kaitaia and Awanui. 

Police say those arrested are aged from 18 to 57, and several are patched gang members or gang associates.

Police seized around $35k worth of meth, $40k cash, weapons and stolen property in the raid.