Fifteen people were arrested in Gozo on Saturday night over drugs.
Those held were 14 men and a woman, aged between 17 and 31, the police said.
Their nationalities are Maltese, English, African and Finnish.
The various drugs found in their possession included cocaine, ecstasy, cannabis grass as well as cannabis resin.
Three are being investigated on possession of cocaine and ecstasy in amounts denoting the drugs were not for their exclusive use.
They were arrested by members of the Drug Squad and Criminal Investigation Department during the course of inspections.