Police are investigating the circumstances surrounding two armed robberies in Dundas this afternoon, NSW Police say.
About 12.30pm today, a man entered a post office on Station Street armed with a firearm.
He approached the counter and pointed the firearm at a 51-year-old employee who turned and ran from the counter to the rear of the store.
The armed man left the premises empty-handed.
The second incident occurred at a supermarket on Yates Road about 12.45pm.
A man matching the same description entered the supermarket and approached the counter where a 60-year-old woman was working.
The man produced a firearm and reached over the counter and stole a small amount of cash that was sitting next to the till.
He ran from the store onto Mackay Road and entered a blue Holden Berlina and left the area.
Crime scenes have been established at both stores and police are continuing their investigation.
A man described as being 175cm tall with a black goatee style beard and wearing a black hooded jumper with blue tracksuit pants that had white stripe down the side and dark gloves may be able to assist with inquiries.
Anyone with information that can assist with this investigation is asked to contact detectives at Rosehill Police Station on 9897 4199, or Crime Stopers.