The Abu Sayda bombing was a chlorine car bombing attack that occurred on 15 May 2007, in an open-air market in the Iraqi Diyala Governorate village of Abu Sayda. The attack killed up to 45 people and wounded 60 more in the Shia village, the highest death toll of all chlorine bombings in Iraq. Iraqi and American military sources initially denied the use of chlorine. References 2007 murders in Iraq 21st-century mass murder in Iraq Bombings in the Iraqi insurgency Car and truck bombings in Iraq Chemical weapons attacks Marketplace attacks in Iraq Mass murder in 2007 May 2007 events in Iraq Terrorist incidents in Iraq in 2007 Violence against Shia Muslims in Iraq