A former CIA case officer was sentenced by a U.S. federal judge in Virginia on Friday to serve 19 years in prison, after he pleaded guilty in May to conspiring to become a spy for China, federal prosecutors announced.

Jerry Chuan Shing Lee, 55, left the CIA in 2007 and moved to Hong Kong. A few years later, in 2010, he was approached by two Chinese intelligence officers who offered to pay him $100,000 and to take care of him "for life" for information he had acquired as a CIA officer.

Hundreds of thousands of dollars were subsequently paid into Lee's personal bank account between 2010 and 2013, in exchange for his services.