Police are investigating following an alleged armed robbery in Sydney’s west.

About 12.15am today (Friday 1 July 2016), an employee exited through the back door of a business located on Camden Valley Way, Camden.

Police have been told as the woman walked back toward the business from the toilet block, she was grabbed by a man, who allegedly produce a knife, and threatened her.

The man lead the woman back inside the business at knife point and threatened another staff member, who handed over cash before the man fled the scene.

Officers attached to Camden Local Area Command with assistance from NSW Police Force Dog Unit established a crime scene and conducted a canvass of the area.

Police have commenced an investigation into the incident and would like to speak to a man who might be able to assist with inquiries.

He was described as being of Caucasian appearance, in his 20’s, 183cm tall, of thin build and had a short brown beard. He was last seen wearing a long sleeved fluro orange hooded jumper.

Police are urging anyone with information to come forward and contact police.