At least one man was arrested during a planned police operation in the Shoalhaven on Wednesday morning.
It is understood officers searched a number of properties in the local area, as part of an ongoing Criminal Groups Squad investigation by State Crime Command into drug supply and associated organised criminal activity.
Officers executed a number of firearm prohibition orders as part the operation.
It is known one property at Tomerong was raided around 7.30am, with a number of officers in marked and unmarked vehicles attended the home, searching the premises.
No further information is available at this time.