Al-Qaida militant group in Iraq on Monday claimed responsibility for a series of deadly bomb attacks that mainly targeted Shiite districts in the capital Baghdad on Sunday. The self-styled Islamic State of Iraq (ISI), al-Qaida front in the country, confirmed in a statement posted on an Islamic website that its fighters "carried out a new wave of simultaneous attacks inside the Shiite strongholds of this Sunni city (Baghdad)." The statement said the attacks came "in response to what the Shiite-led government does, from raids, arrests, displacement and humiliation to seizing the lands and properties of Sunni neighborhoods." A spate of simultaneous car bombs and roadside bombs struck crowded marketplaces and parking lots in Shiite districts in the eastern part of Baghdad late Sunday morning, killing a total of 21 people and wounding 125 others.