A former CIA agent has been sentenced to 19 years in prison for conspiring to spy for China.
Jerry Chun Shing Lee, 55, left the CIA in 2007 and was recruited by Chinese agents in Hong Kong. Prosecutors say he was then paid to divulge information on US national defence.
China is then said to have dismantled a network of informants.
Lee is the third former CIA officer in less than a year to be sentenced for conspiring with China.
He pleaded guilty in May to conspiracy to deliver national defence information to aid a foreign government.
But prosecutors and defence lawyers disagreed over the extent of the crime, with Lee - a naturalised US citizen - seeking a lesser sentence of 10 years.