The police have arrested another person as part of a sting on gang members alleged to have sold methamphetamine in Whangarei.
Twenty people have already appeared in court charged with drug offences, including supplying the class A drug.
The police say a 40-year-old man was arrested while they were searching a property in Whangarei on Wednesday.
He faces one charge of supplying the drug and another of offering to supply it, and will appear in the Whangarei District Court on Thursday.
The police say the majority of those who have been arrested as part of the operation are associates of the Head Hunters gang.
