The case, about which the CPIB has provided few details, is a rare high-level probe in a country that prides itself on a government free from corruption.

Yinson non-executive director Lim Han Joeh owed some £4 million lent to him during the three-day card game.

Construction magnate Premchai Karnasuta was arrested in February 2018 when park officials found guns, animal carcasses – including of a kalij pheasant and a red muntjac – and the pelt of a black leopard at his campsite.

Multi-millionaire Robert Durst has always denied that he shot Susan Berman in the back of the head in 2000 to keep her from talking to police about the disappearance of his wife two decades earlier.