A young man was arrested in Marsa on suspicion of drug trafficking.
The police said in a statement they were informed that the man, who is 18, was running around on a motorbike in the area of Triq il-Ġerrejja trying to sell drugs.
The police first observed him and then approached him, searching his bike and finding 74 sachets of suspected cocaine and 25 sachets of suspected heroin.
An inquiry is being held and the man is expected to be charged in court on Tuesday afternoon.
Police investigations are continuing.