The US Justice Department announced Tuesday it had indicted a former CIA operative for spying for China, in a case that could be tied to the dramatic collapse of the CIA’s China network eight years ago.

Three years after he left the CIA in 2007, Jerry Chun Shing Lee took money from Chinese intelligence officers in exchange for information “relating to the national defense of the United States,” the Justice Department said.

Lee, 53, a naturalized US citizen who was at the time resident in Hong Kong, was given information requests by the Chinese agents and hid the cash payments he received.

He was arrested in January. According to a warrant made public at the time, FBI agents had discovered in Lee’s luggage, during a court-authorized search in 2012, notebooks with the names, contacts and other details on covert CIA employees and informants.

In voluntary interviews with FBI agents in 2012, Lee, who spent 14 years at the CIA, admitted preparing a classified document for the Chinese agents.