Three militants disguised in military uniform attacked a local Iraqi governmental office in Amiriyat al Fallujah in western Iraq on Tuesday, killing eight people and wounding dozens.
Amiriyat al Fallujah is located on the western fringe of Baghdad The attack was claimed by ISIS.
One of the attackers blew himself up inside the building, but the other two were still at large, according to deputy district council chairman Falih al Issawi, who said he could still hear gunfire.
Around 17 people were wounded in the attack, including the head of the council, Shakir al Issawi, who leapt from the window of his office after the explosion, a police source said.
Amiriyat al Falluja is one of the few remaining pockets of territory under government control in Anbar province, most of which is under ISIS control.
Since overrunning the provincial capital Ramadi last month, the insurgents have sought to consolidate their gains in Anbar by attacking the last government strongholds, strung out along the Euphrates river valley.
Iraqi army and Shiite fighting groups have since tried to recapture lost territories.
The Iraqi army started edging towards Baiji oil refinery on Tuesday.