Police are appealing for public assistance after an armed robbery at a bottle shop in St Marys last night.
At 8.20pm yesterday, a man entered a bottle shop on Queen Street in St Marys and threatened an employee with a large carving knife.
The man directed the employee, a man aged 64, to the cash register and demanded money.
The employee was unable to open the cash register and the man ran from the store, without any proceeds.
He is believed to have entered the passenger seat of a dark blue Rav 4 parked in the rear car park that was driven towards Charles Hackett Drive.
The man was wearing a black hoodie and sunglasses, with his face covered, at the time.
Officers attached to Nepean Police Area Command attended and established a crime scene.
As inquiries continue, police are urging anyone who was in the area, or who may have any information that would assist in the investigation, to contact Penrith Police Station on 4721 9462.
Anyone with information about this incident is urged to contact Crime Stoppers: 1800 333 000.