Mateni Tapueluelu said a new agreement with Australia, New Zealand and Fiji police to combat serious and organised crime signals a regional approach to a regional problem.
He said the Tongan government would be increasing staffing levels and police resources.
The Tonga Police Drug Enforcement Taskforce was launched in April 2018 and a total of 154 arrests have been made since then.
The government was also setting up a National Drugs Steering Committee to gather agencies and community leaders together to deal with the problem.
