Hong Kong (CNN) -- China remained tight-lipped Thursday about its stance on NSA leaker Edward Snowden, who is believed to be holed up in a safe house somewhere in the semiautonomous territory of Hong Kong. Snowden provided fresh fuel Wednesday for the controversy he has sparked, telling a Hong Kong newspaper that U.S. intelligence agents have been hacking networks around the world for years, including hundreds of computers in China. In the interview with the South China Morning Post, he also said he plans to stay in Hong Kong to fight any attempt to force him to return to the United States because he has "faith in Hong Kong's rule of law." His comments come as the FBI is investigating his case.
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NEW: There are "no signs" Edward Snowden worked with others, U.S. official says
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The U.S. hacks computers in China, the NSA leaker tells a newspaper
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He revealed secret U.S. programs that collect data on phone and Internet activity
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"We have no information to offer," a Chinese official says
U.S. officials have increasingly accused @placeholder of being the source of thousands of attacks on U.S. military and commercial networks.
The documents also "point to hacking activity by the @placeholder against mainland targets," it reported.