"They have been highly active, and this has been a nightly occurrence over the last three weeks."
Police said the trio, who were linked to a variety of addresses and had "loose" gang connections, had allegedly targeted vehicles in Dunedin and Timaru.
The group were allegedly behind the theft of a Dunedin vehicle on Monday, before dumping it in Timaru and returning to southern city in another stolen vehicle.
The owner of a stolen vehicle had been contacted via social media and taunted with a photo of his stripped down Nissan Skyline, he said.
The cars were allegedly stripped and sold for parts, but it was too early to comment on how the items were sold, he said.
Police were working to identify the parts of other stolen vehicles and track down affected owners, as identification numbers had been removed.
A flatbed Nissan Atlas truck belonging to Brent Lucas Builders Ltd was stolen earlier this month, had its motor removed and cut down into parts.
The theft of the truck which was insured for $7000 but could cost up to $22,000 to replace, had impacted on his business, and "we are going to fork out a lot of money," business owner Brent Lucas said.
The trio were expected to appear in Dunedin District Court today.