Attackers crashed a pair of vehicles and tossed explosives in an attack near an open air market in the capital of China's volatile northwestern region of Xinjiang, leaving an unknown number of people dead and injured, state media reported.
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The operation to recover the unexploded bomb near the Houses of Parliament let to disruption in central London overnight.
Southern parts of England and Wales will see sunny skies after a frosty start.
A police spokesman said the incident in the Bourke Street Mall on Friday was not related to terrorism.