Tanggung jawab atas serangan-serangan bom itu diklaim oleh cabang Al-Qaeda di Irak yang dipimpin almarhum pembangkang Yordania Abu Musab al-Zarqawi, yang tewas dalam serangan udara AS di Irak pada Juni 2006.
Responsibility for the bombings was claimed by al-Qaeda branch in Iraq led by the Jordanian fugitive Abu Musab al-Zarqawi, who was killed in June 2006 in a US airstrike inside Iraq.