The attack, during a funeral in the town of Tuz Khurmatu, 90 kilometers (56 miles) south of the city of Kirkuk, injured two senior Iraqi government officials. One was Ahmed Abdul-Wahed, deputy governor of the largely Sunni Salaheddin province in north-central Iraq, CNN reported.
Last month, at least 208 Iraqi civilians, soldiers and police officials were killed in attacks, figures from Iraq's Interior, Defense and Health ministries indicate.
The rise in violence coincides with three weeks of demonstrations in predominately Sunni Muslim provinces, with protesters demanding the Shiite-led government stop what they call second-class treatment of Iraq's Sunni community, CNN said.
Senate Democrats to pull all-nighter on climate change
Scarlett Johansson steps out with fiance after pregnancy reveal