Police are investigating an armed robbery that occurred on Friday in Wamuran.

Around 3.25pm, a woman entered the Daguilar Highway pharmacy and produced a small handgun from her shoulder bag.

The woman threatened one of the employees and made demands for medication and money.

A second employee complied with the woman and handed over a quantity of medication and a sum of cash.

The woman then exited the shop and was last seen running towards a vehicle that was parked on the side of the road, directly in front of the shop.

The car is described as a small two-door hatchback, green/blue in colour.

The woman is described as approximately 165cm tall, of a slim build with dark brown hair.

No one was injured during the incident.