Zhang, 34, of Irvine, California, was arrested on Sunday at Los Angeles International Airport, according to the first assistant US attorney for the Central District of California, Bill Essayli. He posted about the arrest on X, calling Zhang a "Chinese foreign agent" who "used tradecraft to avoid detection." She faces a federal charge of acting as an unregistered foreign agent.
Authorities said Zhang surveilled Taiwanese President William Lai Ching-te's son. The FBI did not directly name the target but later shared a news article identifying him as Lai Ting-yu. The US Justice Department said Zhang travelled to Seattle in 2025 at the behest of Chinese officials, sending photos, video and license plate information of the Taiwanese leader's son and his family to China.
Essayli said Zhang never notified the Attorney General she was acting for a foreign government, a federal offense. She is scheduled to appear in a Los Angeles federal court on Monday.
The arrest comes amid heightened tensions between the US, China and Taiwan. Washington does not have formal diplomatic ties with Taipei but is bound by law to provide the island with the means to defend itself. Earlier this week, the US delivered two F-16V Block 70 fighter jets to Taiwan. In January, Chinese President Xi Jinping pledged to achieve the "reunification" of China and Taiwan, calling the goal "unstoppable."