BAGHDAD, Aug 13 (Reuters) - At least 60 people were killed and 200 wounded on Thursday when a refrigerated truck packed with explosives blew up in a crowded market in Sadr City, a Shi'ite district in northeastern Baghdad, police and medical sources said.

There was no immediate claim of responsibility for the blast, but Islamic State, ultra-radical Sunni Muslim militants who seized swathes of northern Iraq last year, have claimed similar attacks targeting Shi'ite neighbourhoods. (Reporting by Ahmed Rasheed; Writing by Stephen Kalin; Editing by Clarence Fernandez)

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