LOUISVILLE, Ky. (WDRB) -- Police are investigating a vicious attack inside a local Walgreens, in which a witness says a cashier was chased and bitten repeatedly by a customer, all over reward points.

It happened right in front of customers at the Walgreens on Outer Loop, near Preston Highway, Thursday afternoon.

It all started when a witness we're referring to only as "Robin" says the suspect -- a customer -- became increasingly angry in a dispute over reward points. 

Robin, also a customer, was so disturbed by the incident, she wishes to remain anonymous.

"There was a lot of screaming about her rewards points," Robin said. "Everybody did everything they could to help this customer. She just wouldn't be helped. If it wasn't exactly the way she wanted it, somebody was going to pay."

Things got ugly, fast. Robin says the cashier ran for safety. She headed for the break room and was chased there.

"She then proceeded to grab the cashier's hair and bang her head," Robin said. "All she had access to was the cashier's arms, so she repeatedly started biting the cashier's arms, all up and down her arms. "She's got two holes in her fingers. It was spewing blood everywhere. There was blood all over the walls. There was blood all over the floor. There was blood all over the cashier. It was just everywhere."

Robin says several customers called 911, but the suspect got away. 

"She took off out the door," Robin said. "I don't know what happened after that. I was too concerned with trying to help the employee."

Police are looking to see if surveillance video can help the case.

"We're looking at some evidence now," said Louisville Metro Police spokesman Dwight Mitchell. "We're trying to retrieve to see if it will help us piece together exactly what's happened, and the individual that's involved."

"I so hope they catch her," Robin said. "Nobody should be treated like that that works retail, ever."

A spokesperson with Walgreens would not comment on the incident. If you have any information, call the tipline at 574-LMPD.

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