Kun Shan Chun, an FBI electronics technician for almost 20 years, is being charged with acting as an agent of China, Reuters reports.

The FBI mole, also known as “Joey Chun,” was born in Guangdon, China, and immigrated to America in 1980. He became a naturalized citizen approximately five years later. Chun has been charged with four counts of working to “falsify, conceal, and cover up by trick, scheme, and device a material fact,” reports Fox News.

A conversation with an undercover FBI agent in August of 2015 revealed that Chun attempted to introduce the undercover agent to Chinese affiliates, at least one of which worked for the Chinese government. Chun then told the agent he expected “a cut” of whatever compensation the agent received for passing sensitive information along to a foreign government.

Chun had a top secret security clearance.

Chun was charged with making false statements in a criminal complaint dating back to March. The complaint was unsealed Monday in federal court. The unsealed documents revealed he and some of his relatives had “maintained relationships” with employees of a Chinese tech firm and one person whom “Chun understood to be affiliated with the Chinese government.”

The Manhattan U.S. Attorney Preet Bharara released a report saying Chun would appear in court Monday “in language indicative of a guilty plea.”

If convicted, Chun will be the second case of Chinese espionage in four months, joining Amin Yu “who smuggled underwater drone parts from U.S. companies to a state-owned university in China that does military research.”

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