Nine people have been arrested, and drugs and firearms seized after a three-day police operation in Timaru.
Ten properties were searched during the raids and Aoraki Area Commander Inspector David Gaskin warned police would continue to target people who supplied drugs and caused harm in the South Canterbury community.
"These people are causing significant harm in our communities and it won't be tolerated.
"We'll continue to carry out operations that disrupt the sale and supply of illegal drugs in our community and we will hold those responsible to account."