A 46-year-old Warrawong woman was arrested on Monday morning after police allegedly found multiple bags of heroin in her possession.
Police were patrolling the Berkeley area about 3am and saw a Toyota Hilux at a service station on Northcliffe Drive.
Police immediately recognised the woman who was sitting in the driver's seat.
The woman allegedly made up a reason why she was in the area and police searched her.
They found 10 small, sealed, coloured plastic bags, all containing a white powder.
The woman was placed under arrest and taken to Lake Illawarra police station.