Police from Camden Local Area Command are investigating the circumstances surround an armed robbery at a pizza shop in Narellan last night.

About 8.45pm (Monday 23 March, 2015), a man armed with a machete, entered a pizza shop on Camden Valley Way.

He threatened the female employee, who was alone in the store, and demanded cash from the till, then demanded she open the safe.

The woman complied and the man ran from the store with an amount of cash.

The employee suffered shock but was not physically hurt during the robbery.

At the time of the robbery the man was wearing a red motorcycle helmet with a grey top and black track pants with white shoes.