China is cracking down on online mapping that it considers a risk to national security.
The campaign is the latest element of a drive to strengthen information security in China, which has created uncertainties for a range of foreign technology businesses in the country, including Google.
Details of the crackdown were given by Song Chaozhi, deputy director of the state bureau of surveying and mapping, in a programme aired on CCTV, the main state broadcaster last week.
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