Police have charged a woman after an alleged armed robbery of a Harristown chemist yesterday.

It will be alleged around 9.00 am a woman entered the Drayton Road store armed with a star picket and demanded cash.   The woman has hit a female staff member with the star picket to the left side of her face.

The woman fled the store with a quantity of cash.

Police attended and a woman was apprehended a short distance away in possession of cash and a star picket.

The staff member received bruising and an abrasion to the face.

A 19-year-old Newtown woman has been charged with one count each of armed robbery, assault occasioning bodily harm and enter premises with intent.

She will appear at the Toowoomba Magistrates Court today, February 6.