A Thai anti-corruption court on Monday accepted a lawsuit accusing duty-free giant King Power, the company that owns Leicester City Football Club, of owing the state $420 million in unpaid taxes. The case is a rare attack on an ultra-rich firm run by one of the kingdom's best-connected billionaires. The suit, filed by an anti-graft official, accuses King Power executives of colluding with airport authorities to pay only three percent of the company's annual revenue instead of the contracted 15 percent. The plaintiff, Charnchai Issarasenanark, said the graft caused the state 14 billion baht ($420 million) in damages.