Nvidia stocks tumble as CEO investigated over spy claims | First Thing

Jensen Huang reportedly had close relationship with Chinese businesswoman accused of passing information to Beijing. Plus, tennis legend Billie Jean King tells all

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Good morning. Nvidia's chief executive, Jensen Huang, has been placed under independent investigation" by the tech company after reports emerged he had been the target of a foreign intelligence effort", namely a close relationship with a Chinese businesswoman who is accused of passing information to Beijing. Nvidia stock is down 5% in pre-market trading as a result.

The company's board said in a statement that while it had no reason to believe that either US national security or Nvidia secrets were compromised, its inquiry would examine all available information. Republican lawmakers have expressed alarm, asking Huang to give the House foreign affairs and intelligence committees a closed-door briefing next week on Nvidia's security protocols against foreign adversary espionage".

The Guardian will have extensive coverage of the Cop31 conference, including a daily live blog, and these explainers on what is at stake and what the talks can achieve, and who the key players are. Find all of our Cop31 coverage here.