WEST ALLIS, Wis. (CBS 58) -- West Allis police need your help identifying a suspect they say robbed a bar on Monday, Sept. 28. 

Police say the suspect robbed Uncle Fester's Bar -- located at 5732 West Mitchell Street -- just before 5 p.m. He showed a firearm, possibly a 9 mm, and took money from the business. 

He was last seen walking in the alleyway between South 56th and 57th Streets. 

Police describe the suspect as a Black male, approx. 30-35 years old, approximately 5'06" to 5'07" tall, thin build, balding, possible tattoos on top of each hand/wrist, possible thin mustache, and last seen wearing a white medical style mask, royal blue hooded sweatshirt with a yellow Nike logo, black pants, and white shoes with royal blue tips.

Anyone with information on this robbery or suspect is asked to contact West Allis Police at 414-302-8086 or remain anonymous and be eligible for a reward by calling Crime Stoppers at 414-476-CASH.