Police say Kirkuk Governor Abd al-Rahman Mustafa was not harmed. But the blast in the northern city of Kirkuk killed one civilian and wounded at least 12.
Kirkuk's population is a mix of Kurds, Arabs, and ethnic Turkmen . Hundreds have been killed there in sectarian and ethnic fighting in the past few years.
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SUNNI, SHI'A: Iraq is riven along sectarian lines, faults that frequently produce violent clashes and are a constant source of tension. Sectarian concerns drive much of Iraqi politics and are the main threat to the country's fragile security environment.