Subscribe | UPI Odd Newsletter Subscribe CENTERVILLE, Utah, July 23 (UPI) -- Investigators in Centerville, Utah, said they have a prime suspect in the case of a string cheese-powered fake bomb that was placed in a grocery store. An employee of Dick's Market reported seeing a cylindrical device wrapped in duct tape near a dry ice cooler after police received a phone tip of a bomb in the store, the Ogden (Utah) Standard-Examiner reported Wednesday. Advertisement Centerville police Lt. Paul Child said the store was closed for about two hours while bomb sniffing dogs and a bomb technician ensured there was no real threat to the store. The device wrapped in duct tape turned out to be a piece of string cheese and police said surveillance camera footage shows a suspect hanging it. "We are fairly confident we know who it is," Child said. "We aren't searching for any other suspects." However, no arrests have yet been made.