China 'gravely concerned' by Snowden's claims of U.S. cyber attacks on China

BEIJING (Reuters) - China has expressed "grave concern" over former U.S. spy agency contractor Edward Snowden's allegations that the United States had hacked into computers in China, saying it had taken up the issue with Washington.

A statement issued late on Sunday by China's foreign ministry came a day after Hong Kong's South China Morning Post newspaper quoted Snowden offering new details about U.S. surveillance activities. These included accusations of U.S. hacking of Chinese mobile phone firms and targeting of China's Tsinghua University.