Car bombs and gunfire shook the Iraqi capital Wednesday, killing more than 150 people and injuring hundreds more, most of them Shi'ite Muslims.
The deadliest attack was in the mainly Shi'ite Kadhimiyah district, where a suicide bomber in a van detonated his explosives near a crowd of laborers waiting for work, killing nearly 90 people and wounding at least 160 others.
The violence was repeated across Baghdad, where at least nine other bombings and a series of shootings killed and injured dozens more people.
In the northern suburb of Taji, gunmen dragged at least 17 men from their homes and executed them in broad daylight.
Al-Qaida in Iraq said in an unverifiable Internet posting that it carried out the Baghdad attacks to avenge a joint U.S. - Iraqi military offensive underway against insurgents in the western town of Tal Afar.
The violence comes as Iraqi leaders announced they had finally sent the draft constitution to the United Nations, ending weeks of negotiations.
Information for this report is provided by AP, AFP and Reuters.