Shoalhaven police have released CCTV images of three men as part of a public plea to locate dangerous criminals responsible for two armed robberies in the region last year.
Police said the crimes were believed to be linked, and Strike Force Marroo was established in September last year to investigate.
In the first robbery, a man wielding a tomahawk entered a service station on the Princes Highway, South Nowra, and demanded money about 2.50am on Wednesday, August 7.
He fled the scene with cash.
Officers from Shoalhaven Local Area Command were called and established a crime scene but were unable to locate the man.
The man was described as about 175cm tall and of medium build. He was wearing a dark green jumper, black and white gloves, long pants, running shoes, a white T-shirt around his face and was carrying a green reusable shopping bag.
In the second robbery, two men armed with a firearm entered a supermarket on Lyndhurst Drive, Bomaderry about 7pm, Monday, September 9.
The men demanded money from the male attendant, before assaulting him and fleeing with cash in a black station wagon.
Police were called and a crime scene established; however, police were unable to locate the men.
One man is described as about 173cm tall, of medium build and has tanned skin. He was seen wearing a black balaclava with a red hooded jumper, grey tracksuit pants and white gloves.
The other is described as about 183cm tall, of solid build, and was seen wearing a black balaclava, a blue hooded jumper and was carrying a brown bag.
Shoalhaven Police Inspector John Behrendt said despite the incidents, the Shoalhaven was not particularly prone to violent robberies.
"It's pretty well on par across country areas," he said.
However, Insp Behrendt said there was always a risk while those who committed such offences were at large.
"We hope these images will assist in identifying some offenders," he said.
Insp Behrendt said it was important anyone who was a victim of an armed robbery was compliant.
"Be ... observant, and take any info you can," he said.
"Do not resist and ... protect yourself from any injury or harm."