High crime areas make a list of black spots

Police have deployed more plainclothes officers and SWAT teams to patrol zones

Beijing has revealed a list of 150 areas blighted by high crime and other social problems.

Among the zones is the area around the north gate of the Forbidden City, and Tangjialing, where many unemployed college graduates - the so-called "ant tribe" - live. The surrounding area of New World shopping center is also among the 150 places on the list and under the close scrutiny of security agencies.