Servers used in a fraud case that Singapore announced last week were supplied by U.S. firms and may have contained Nvidia's advanced chips, a government minister said on Monday.

SINGAPORE is investigating whether Dell Technologies and Super Micro Computer servers shipped to Malaysia housed Nvidia chips barred from China, outlining a case that’s highlighted the role of middlemen in funnelling high-end semiconductors.

Singaporean police arrested three men for allegedly defrauding an unnamed supplier of computing servers, casting a spotlight on local intermediaries’ role in funneling Nvidia Corp. chips around the world.