Speaking to reporters at the White House about the developments surrounding Huang, Trump said he had personally asked the Nvidia chief whether he knew that the woman was allegedly a spy.

"I asked him that question, 'Did you have any idea she was a spy?' He said, 'I had no idea she was a spy,' and I really believe him," Trump was quoted as saying by the BBC.

Asked whether he had been aware of the relationship, Trump said he had been informed about it "over a period of time" but did not elaborate.

The US President described Huang as an "honourable guy" and expressed confidence that he would emerge in good shape after the investigation.

"I hope there's no problem, I believe he is suffering greatly," Trump added.

Trump also revealed that he had spoken to Huang over the phone on Monday to check on his well-being and discuss the allegations.

China, meanwhile, has rejected claims that a woman linked to the Nvidia CEO was working for Chinese intelligence, describing the allegations as an attempt to malign Beijing.

Speaking to reporters, Chinese Foreign Ministry spokesperson Guo Jiakun said: "We responded to that last week. The 'Chinese spy' allegation is purely unsubstantiated and directed at smearing China."

Meanwhile, Singapore-based data centre company Megaspeed has denied allegations that it was involved in the illegal transfer of advanced semiconductor chips to China. The company came under scrutiny following reports about its former executive Alice Huang's alleged relationship with Jensen Huang.

Jensen Huang has reportedly acknowledged having an extramarital relationship with Alice Huang, who has allegedly come under suspicion from US intelligence officials over possible links to Chinese intelligence.

Bill Ackman, Elon Musk React To Jensen Huang Controversy

The controversy has also drawn reactions from prominent business leaders, including Pershing Square Capital Management CEO Bill Ackman, who expressed support for Huang following his admission.

In a post on X, Ackman wrote: "@JensenHuang is human. And he is an incredible human. Even incredible humans make mistakes. He takes full responsibility as he should. We should all support him and his family. Onward."

However, Ackman later clarified that his support did not mean Huang should be given a free pass if the allegations extended beyond an extramarital affair.

"I am not suggesting he gets a free pass. If indeed this is more than an affair, then it is obviously a real problem. I like the guy. He has done a lot of good for the world and I hope the damage here is minimal. That is, I am hoping for a simple affair, not a risk to our national security," he added.

Sequoia partner Shaun Maguire also came out in support of Huang, describing him as one of the greatest entrepreneurs of his generation.

In his post on X, Maguire said Huang had done something "incredibly dumb" but suggested that there was no malicious intent behind his actions.

"Jensen is one of the greatest entrepreneurs of this generation. He did something incredibly dumb. It was bad for America. But my guess is there was no bad intention," he wrote.

Tesla CEO Elon Musk also backed Maguire's remarks, responding with a brief "I agree."

Meanwhile, an old remark by Musk about suspected spies operating in Silicon Valley has resurfaced amid the controversy.

"If she's a 10, you're an asset," Musk had previously said.