Iraq: Car bombs hit worshippers in Baghdad and Kirkuk 29 March 2013 Last updated at 13:30 Shia worshippers in the Iraqi capital Baghdad and the northern city of Kirkuk have been targeted in a series of car bomb attacks. At least 18 people are reported to have died and dozens have been wounded. Blasts hit mosques in the Baghdad areas of Zafaraniyah, Binook, Qahira, and Jihad during Friday Prayers. The Kirkuk attack was reported at the same time. Violence has decreased in Iraq since the peak of the insurgency in 2006 and 2007, but bombings are still common. Sunni Islamist militants linked to al-Qaeda have vowed to step up attacks on Shia and official targets this year, in an attempt to weaken the Shia-led government. As many as 60 people were killed in a series of car and suicide bombings in mainly Shia areas in and around Baghdad on 19 March - the 10th anniversary of the US-led invasion that toppled Saddam Hussein. The violence comes at a time of deep political crisis in Iraq, with Prime Minister Nouri Maliki sharply at odds with a range of political forces, including the Kurds, most of the Sunni groups, and many factions within his own Shia community. With its massive oil reserves, Kirkuk - home to a mixture of Arabs, Kurds and Turkmen - is one of the most bitterly contested of Iraq's disputed territories. The Kurds want to incorporate it into their largely autonomous region, while Arabs and Turkmen oppose any change to its current status, ruled directly from Baghdad. Militants often exploit tensions between the Iraqi and Kurdish security forces by launching deadly attacks in the city, correspondents say.