China has accused a Hong Kong-based reporter for Singapore's Straits Times newspaper of spying for foreign agencies, but his wife says it is a set-up.
If charged and convicted, Ching Cheong, 55, a Hong Kong citizen and permanent resident of Singapore, could face the death penalty.
He was detained in the southern city of Guangzhou on April 22.
Ching is the second employee of a foreign news organisation taken into custody by President Hu Jintao's Government in a year.
New York Times researcher Zhao Yan was formally arrested last October for revealing state secrets. Zhao has yet to go on trial.
Ching's wife, Mary Lau, is adamant he is innocent.
Lau said her husband had been accused of stealing state secrets - obtaining unpublished interviews with the late Communist Party chief Zhao Ziyang, who was purged for opposing the 1989 Tiananmen Square massacre.
Reporter held as spy in China
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