Two men and a woman were arrested on Friday night following a drug bust in Sliema, the police said.
A roadside inspection led to the arrest of a man from Fgura, a woman from Valletta and a Dutch national, aged between 20 and 43.
One of those arrested was found in possession of capsules with around 300 grams of drugs, believed to be cocaine.
A magisterial inquiry has been ordered.
The three are expected to be arraigned shortly.