US President Donald Trump says the FBI is investigating the matter involving Nvidia CEO Jensen Huang and alleged links to a Chinese government agent.
Speaking at the White House on Monday, Trump said he had spoken to Huang earlier in the day and that the tech executive denied knowing the person was a spy.
"I asked him that question, 'Did you have any idea that she was a spy?' He said, 'I had no idea that he was a spy.' And I really believe him," Trump said.
Trump said he had been hearing about the allegations for some time but did not specify when he was first informed.
Huang, who leads one of the world's most valuable technology companies, acknowledged to Nvidia's board that he had been unfaithful to his wife with a business executive suspected by US intelligence of gathering information for Beijing.
