"An American geologist who was imprisoned for more than seven years on a vague charge of “illegally procuring state secrets” has been deported by China and arrived home in Houston on Friday..."

http://www.nytimes.com/2015/04/04/world/asia/china-deports-a...

"An American automotive engineer has been detained by the Chinese police for more than a year on charges of violating trade secrets, according to United States officials..."

http://www.nytimes.com/2009/12/18/world/asia/18detain.html