A Florida man faces several felony charges after multiple Circle K gas stations in Central Florida reported hundreds of dollars worth of diesel fuel loss. Upon receiving a complaint from a Circle K gas station in Deltona, the Volusia Sheriff's Office began investigating a string of unexplained lost diesel at Circle K locations throughout the county. July 12: The same Deltona Circle K lost 130 gallons of diesel fuel ($688.87). July 12: A Circle K in DeLand lost 97 gallons of diesel fuel ($484.03). Circle K loss prevention personnel explained that the thief used the "magnet method" to bypass the pump's payment system.