(Bloomberg) -- Singaporean businessman Ng Yu Zhi, who is at the center of an alleged $1.1 billion nickel trading scam, was sued by the liquidators of his Envy Group for damages totaling about S$517.4 million ($377.3 million), according to a court document.

Three of the Envy companies and the liquidator team led by Bob Yap of KPMG Singapore filed the suit against Ng and three other people on Nov. 19, according to the document, which listed the nature of the case as insolvency.

Ng, 34, faces 69 charges in the case that has riveted Singapore’s moneyed class after his February arrest. Among the allegations is that he raised at least S$1.46 billion in what authorities have called one of the city-state’s largest-ever suspected investment fraud schemes. 

Hundreds of investors, from businessmen and top legal professionals to financiers and footballers put their money into the scheme, which touted average quarterly gains of 15%. 

The High Court approved a windup of Envy Global Trading and its sister firms in August. The companies were founded by Ng, who also had the controlling stake in all of them. Ng remains on bail and has not pleaded guilty. 

Ng declined to comment. Yap did not immediately comment. 

Along with Ng, Lee Si Ye, an Envy shareholder, was also named on the court document. Ju Xiao and Cheong Ming Feng, former Envy employees, are the third and fourth defendants. 

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