A 34-year-old man from Mqabba is expected to be arraigned in the coming days after drug related material, a firearm, and other items including fake money were found in his car.
The police said in a statement that policemen on the beat in Kirkop investigated a suspicious looking vehicle at around 3.30 a.m.
As they approached the vehicle, the passenger ran away but the police held the driver and searched the car.
An inquiry is being held by duty magistrate Jacqueline Padovani Grima.