Manus provincial police commander, Chief Inspector David Yapu, is concerned over the increase in those illegal activities.
During the weekend, five youths, aged between 18 and 25, were arrested in Lorengau town for homebrew and drug activities.
PPC Yapu said Lorengau town, which was once a safe haven, is turning into a chaotic drug zone.
He blamed this on the new trend in drugs being brought into the Province by the betelnut trade from Wewak, Madang and Kavieng by boats.