Police have seized methamphetamine with a street value of about 20 thousand dollars ... in raids in Dunedin and Invercargill

Four vehicles, a firearm and 42 thousand in cash were retrieved during the sting on meth supply and distribution in the South.

Four men appeared in the Dunedin District Court yesterday.

They've been charged with offences including selling meth, unlawful firearm possession, unlawfully taking a vehicle and driving offences.

Two women will face charges in relation to supply and selling the drug in Dunedin and Invercargill district courts today.