Five people are facing charges, as a result of the police investigation into the drug supply activities of the Comanchero motorcycle gang.
Police said further phases of Operation Leith, a sub-operation of Operation Avon, had been underway and four men and a woman, were arrested as a result of recent search warrants.
The group, aged from 35 to 63, were not members of the Comancheros, however were integral parts of their drug supply network, police said.
They face charges of methamphetamine supply and participating in organised criminal group offences.
Two homemade tasers and several electronic devices were also seized, police said.
It brings the total number of people arrested and charged in relation to Operation Avon and Leith to 31.
Detective Inspector Nicola Reeves said numerous reports indicated recent police action had significantly disrupted the supply of illicit drugs into Invercargill and Dunedin.
"Community members have approached our teams to express their praise for the recent arrests and results.
"The termination of Operation Leith is a clear message to gang members, their associates and anyone dealing drugs in Southern District that we will track you down and hold you to account for your offending," she said.
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