Police are appealing for information following the armed robbery of a service station at Barrack Heights on Friday night.
Police say a man entered the premises on Shellharbour Road about 9.50pm and approached a 23-year-old female attendant.
The man produced a knife and demanded money. The attendant complied and the assailant fled with a sum of cash.
Detectives want to speak to a man described as being slim, 170cm tall, 30 to 40 years old and of Caucasian appearance.
The man was wearing a grey hooded jumper and black pants.