An ex-CIA agent has pleaded guilty to spying for China, the US justice department says, in a case believed to be linked to the dismantling of a US espionage network.
Jerry Chun Shing Lee, 54, left the CIA in 2007 to live in Hong Kong, where he was recruited by Chinese agents.
Prosecutors say the naturalised US citizen was then paid to divulge information on US covert assets.
This led China to bring down a network of informants between 2010 and 2012.
About 20 informants were killed or jailed during that period – one of the most disastrous failures of US intelligence in recent years.
The US Assistant Attorney General for National Security, John Demers, said Lee’s case was the third involving US agents and China in less than a year.
“Every one of these cases is a tragic betrayal of country and colleagues,” he said.
What did Lee do?
Lee, who worked for the CIA between 1994 and 2007, pleaded guilty to conspiracy to deliver national defence information to aid a foreign government in a court in Virginia on Wednesday, the justice department said in a statement.
It said Lee was contacted by the Chinese intelligence agents in 2010. They offered him money, promising to take care of him “for life” in exchange for the required secret information. Hundreds of thousands of dollars were deposited in his Hong Kong bank account between May 2010 and December 2013.
Mr Lee created a document containing information about CIA activities, including locations to which US agents would be assigned.
In 2012, FBI agents searched a hotel room in Hawaii registered in Mr Lee’s name and found a USB drive. Investigators found the document on unallocated space in the drive, suggesting it had been deleted.
The search also revealed Lee to have a day planner and address book containing notes of intelligence provided by CIA agents, their true identities, operational meeting locations and phone numbers, and information about covert facilities.
Lee was interviewed by CIA officers in 2012 during which he said he had met Chinese intelligence officers but concealed the fact that they had set him tasks, the justice department said. In 2013 he first denied knowing about the document on his USB drive and then admitted he had created it but said he had never handed it on to Chinese agents.
Mr Lee was arrested at New York’s JFK airport in January 2018. He will be sentenced in August.
CIA spy operation in China: Key dates
- 2010: Information gathered by the US from sources deep inside the Chinese government bureaucracy start to dry up
- 2011: Informants begin to disappear. It is not clear whether the CIA has been hacked or whether a mole has helped the Chinese to identify agents
- 2012: FBI begins investigation
- May 2014: Five Chinese army officers are charged with stealing trade secrets and internal documents from US companies. Later that same month, China says it has been a main target for US spies
- 2015: CIA withdraws staff from the US embassy in Beijing, fearing data stolen from government computers could expose its agents
- April 2017: Beijing offers hefty cash rewards for information on foreign spies
- May 2017: Four former CIA officials tell the New York Times that up to 20 CIA informants were killed or imprisoned by the Chinese between 2010 and 2012
- June 2017: Former US diplomatic officer Kevin Mallory is arrested and charged with giving top-secret documents to a Chinese agent
- January 2018: Former CIA officer Jerry Chun Shing Lee is arrested