It happened in the 500 block of N. Oliver.
Police tell us the robber jumped over a counter and cleaned out the register then left.
A customer noticed what happened through the window and called 911.
Police describe the suspect as a black man in his 40s or 50s. He was waring a wig with long reddish-brown hair, a black hat, a black jacket with gold stripes and the number 24 on the back.
He left in a gold four-door car with license plate number 584-EDD (believed to be a Kansas tag).
Anyone with information is asked to contact police.