A police operation targeting drug dealers, burglars and receivers of stolen property has led to 30 arrests in Hawke's Bay and Gisborne.
And police have promised that they will remain vigilant in these areas despite the success of the Eastern District operation.
More than 40 police searched 24 properties around the region on Wednesday, and 15 people were arrested in the Napier-Hastings area, nine in Wairoa and six in Gisborne.
They face charges ranging from possession of cannabis for supply through to receiving stolen property.
The head of the district Organised Crime Unit, Napier-based Detective Senior Sergeant Mike Foster, said: "We've really hit hard in relation to methamphetamine over the last six months, and there's going to be no let-up."