Police are investigating the armed robbery of a fast food outlet on Riverhills Road in Eagleby yesterday afternoon.

Around 3:00pm two men, one armed with what appeared to be a knife, entered the business and demanded money from a female staff member.

The staff member complied with their demands and the men fled the store on foot with a sum of cash.

The female staff member was not physically injured during the incident.

Both men are described as Caucasian in appearance, approximately 175cm tall, with slim builds and dark facial hair.

One man was last seen wearing dark jeans, a dark hooded jumper.

The second man was last seen wearing a light-coloured hooded jumper.

Investigations are continuing.