China on Friday announced an antitrust probe into US chipmaker Qualcomm over its planned acquisition of Israeli tech firm Autotalks, according to the country’s market regulator.

China’s State Administration for Market Regulation said the probe would look at whether Qualcomm violated China’s antitrust law by not lawfully declaring some details in its acquisition of the Israeli chip designer.

Shares Tumble

Qualcomm’s shares fell more than 5% after US President Donald Trump also threatened to hike tariffs against China and cancel a planned meeting with President Xi Jinping.

Companies in both countries are walking a tightrope amid the US and China’s tussle for a lead in the intense artificial intelligence race, where semiconductor trade has become a flashpoint.

Qualcomm completed the Au

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