The Central Criminal Court for Corruption and Misconduct Cases in Bangkok said it would look into the allegations made in the lawsuit to determine whether there was a case to be heard, and would review the list of potential evidence and witnesses in February ahead of preliminary hearings.
Charnchai Issarasenanark, at the time an anti-graft official, filed the suit in a private capacity in July against the duty-free retailer, which is owned by billionaire Vichai Srivaddhanaprabha and his family. The committee of which Charnchai was a member has since become defunct as part of the military government's plan to restore democracy.
The suit accuses King Power of criminally failing to pay the Thai government 14 billion baht from the operation of the airport franchise it was granted in 2006.
The suit was also brought against executives from the state-owned airport operator, Airports of Thailand (AOT).
In a statement on Monday, King Power said: “The allegations in question have yet to be accepted by the court and are categorically denied. King Power has always followed and been absolutely committed to the highest standards in proper and ethical business practice. We are proud of our company’s good name and honest reputation and will fight rigorously any attempts to discredit them.”
The AOT was not immediately available for comment.
Self-made businessman Vichai founded King Power in 1989.
The duty-free business took off in 2006 when it was granted an airport monopoly under the government of then prime minister Thaksin Shinawatra, but it continued to prosper even after Thaksin's ouster in a coup that year.
Vichai bought Leicester City in August 2010.
The family's empire also includes Belgian football club, Oud-Heverlee Leuven, Accor's Pullman hotels in Thailand and a controlling stake in Asia Aviation Pcl, operator of low-cost carrier Thai AirAsia.
(Reporting by Aukkarapon Niyomyat, Chayut Setboonsarng and Panarat Thepgumpanat; Editing by Matthew Tostevin, Richard Balmforth and Martin Howell)
