Drug trafficking is widespread in Papua New Guinea with many people involved according to the Royal Papua New Guinea Constabulary.
The media director, Superintendent Dominic Kakas, says a new drugs operation which started a month ago, has seen another four people arrested in the Western Province on drug trafficking charges
He says that public servants, school children and villagers may all be involved.
The rural nature of the Western province means that marijuana can be easily transported from the highlands to the borders of Australia and Indonesia.
Superintendant Kakas says the latest arrests have exposed a need to clamp down on traffickers there.
"You can say it's quite extensive and it involves alot of people. Our arrests are worrying and yes, maybe we might need to tighten up on law and order in that area of the country."
Superintendant Dominic Kakas of PNG police.