Manus PPC, Chief Inspector David Yapu, revealed that since January, 53 drug cases were reported.
Manus police say from the 53 cases reported, 24 accused were convicted and sentenced to imprisonment terms ranging from three to 12 months.
12 convicts were placed on good behaviour bond, two cases struck out while one was dismissed from court.
PPC Yapu says this sudden increase in drug cases was alarming in both Lorengau town and the villages.
The offenders are from the age group of 18 to 30 years.