Washington:US tech giant Nvidia, a leading supplier of chips for artificial intelligence, is embroiled in a national security controversy involving its CEO Jensen Huang and allegations of espionage linked to China.

According to Anadolu Agency, the controversy centers on Huang's extramarital relationship with Alice Huang, a Chinese businesswoman. US intelligence officials reportedly believe she was recruited to gather information for Beijing. Nvidia announced an independent investigation into the matter, while US lawmakers are seeking answers on whether sensitive technology was compromised.

Beijing has dismissed the allegations as "unsubstantiated" and a smear campaign against China. The controversy arises as US President Donald Trump and Chinese President Xi Jinping prepare for discussions at the upcoming Asia-Pacific Economic Cooperation (APEC) summit in China, where trade and technology issues are expected to be key topics.