An anonymous tip on the Shelby County Sheriff's Department webpage warns of possible violence at the fair on Friday night. Law enforcement are on alert as there are two fairs taking place on Friday, the Alabama State Fair in Alabaster and the Shelby County Fair in Columbiana. Officials say it is unclear which fair the post is referring to. Sheriff's officials posted on Facebook that the threat has not been substantiated. However, out of an abundance of caution, they have notified Alabaster and Columbiana police about it, and they have increased their presence at the fairs. Investigators are working to determine the validity of the threats and locate potential participants.