Police are still seeking four people in Nelson, Westport and Christchurch after a drugs sting that has led to 150 arrests in the South Island in the past five months.
Police arrested 36 people this week, 17 of them patched Mongrel Mob members, after raiding the gang's Christchurch headquarters.
Detective Sergeant Ross Tarawhiti of Christchurch said police were still looking for four suspects and were confident of finding them.
The police operation had focused on the sale of drugs from the gang's headquarters and other houses around the city. An average of 30 customers a day were buying drugs from the headquarters.
Drug suspects still at large
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