HUTCHINSON, Kan. (AP) — Kansas State Fair officials are warning the public about online ticket brokers who have been promoting tickets they don’t have yet for the fair’s grandstand concerts.

Fair Manager Denny Stoecklein said Tuesday the sites are advertising and selling tickets they cannot guarantee. Stoecklein also says he’s contacted the Kansas Attorney General’s Office, which plans to communicate with the online sites to stop selling tickets they do not have.

The Hutchinson News reports that a site promoting tickets for country singer Hunter Hayes has been offering prime seating for from $120 to $380. The fair’s tickets range from $37.50 to $75.

Stoecklein says the Kansas State Fair and Tix.com are the only official sellers for the Kansas State Fair concert tickets. Sales open to the general public Saturday.