An Iraqi boy inspects a burnt-out vehicle following a suicide attack the previous night in Baghdad's eastern al-Jadidah district, on October 7, 2013. Violence in Iraq has reached a level unseen since 2008, amid persistent fears of a relapse into the kind of intense Sunni-Shiite bloodshed that peaked in 2006-2007 and killed tens of thousands of people.

At least 11 people were killed in a bombing at a mosque in Iraq's northern city of Kirkuk on Tuesday, according to United Press International.

The powerful blast struck a crowd of Sunnis as they left after prayers at the start of the Muslim feast of Eid al-Adha, or Feast of Sacrifice, said the Associated Press

As many as 12 died, officials told the AP. Over a dozen were reported wounded.

Police told China's Xinhua the explosion also damaged cars and buildings near the mosque.

"I was on my way home nearby when I heard the explosion," Kirkuk resident Ibrahim Mohammed told Reuters. "I ran back to see what had happened and there were many killed and wounded people."

Violence in Iraq is at its worst level since 2008, with 6,000 people reported killed over the past year.

No group has claimed responsibility for the Tuesday attack.

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