Updated

Iraqi officials say a suicide bomber targeted a meeting between security forces and Sunni militiamen in a small town north of Baghdad, killing at least 16 people.

A police officer says Monday's attack took place in Duluiyah, some 80 kilometers (45 miles) north of Baghdad. The bomber drove his explosives-laden Humvee into the gathering of a major Sunni tribe, the Al-Jabour.

Al-Jabour fighters have sided with Iraqi forces in the battle against the militants from the Islamic State group, an al-Qaida-breakaway.

The bombing was followed by clashes with militants who tried to overtake the town. Duluiyah fell to the Islamic State group for two days in July.

A medical official confirmed causality figures. Both officials spoke on condition of anonymity because they are not authorized to talk to media.