US authorities arrested a California woman on Sunday and accused her of spying on a son of Taiwan's president at the behest of Chinese officials, the FBI said.

The FBI arrested Wanying Zhang, also known as Heather, at Los Angeles International Airport ​on Sunday before her planned departure to China, the agency said in a ​statement. Authorities charged Zhang, 34, of Irvine, California, with acting as an unregistered ⁠foreign agent.

Zhang surveilled a son of Taiwanese President Lai Ching-te, the FBI said. The agency ​did not directly name Zhang's alleged target, but later shared a New York Post report identifying ​him as Lai Ting-yu, a US resident.