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Iraq members of the Sahwa or Awakening, Sunni rebels who sided with US soldiers against Al-Qaeda during Iraq's brutal insurgency, mourn during the funeral of local leader Shaalan Nuri Jibawi, during his funeral on April 19,2014, in the town of Zankur 10KM north of the city of Ramadi, in the provincial capital of Anbar province. Jibawi was killed after being ambushed by anti-government in the area. AFP PHOTO/AZHER SHALLAL Image Credit: AFP

Baghdad: A series of attacks, including a coordinated assault on a private college in Baghdad, killed at least 15 people and wounded nearly 50 others in Iraq on Sunday, officials said.

Less than two weeks ahead of parliamentary elections, Iraq is struggling to keep a lid on a surge in sectarian violence that has sent bloodshed soaring to levels not seen since the country balanced on the brink of civil war in 2006 and 2007.

Sunday’s deadliest attack took place outside the southern city of Samawah, where two car bombs exploded simultaneously in a commercial area, killing seven civilians and wounding 17, police said. The predominantly Shiite city is located 370 kilometres southeast of Baghdad.

The dramatic assault on the college happened in Baghdad’s eastern neighbourhood of Ur. A suicide bomber with an explosives belt attacked the main gate of the college as three militants attacked the back gate, police said. The militants killed four policemen and one teacher, and wounded another 18 people. Security forces killed all of the attackers.

In a third attack, a car bomb in a commercial area in the town of Iskandariyah south of Baghdad killed three civilians and wounded 12 others, police said.

Medical officials confirmed causality figures. All officials spoke on condition of anonymity as they were not authorised to release information.

There were no immediate claims of responsibility for the bombings, but jihadist insurgent groups have stepped up attacks across the country since the Shiite-led government cracked down on a mostly Sunni protest movement last year. Violence outside the capital, in particular, has increased as militants look to undermine the Shiite-led government ahead of the parliamentary election on April 30.

More than 9,000 candidates will vie for 328 seats in parliament, but there will be no balloting in parts of the Sunni-dominated Anbar province, which is engulfed in clashes between security forces and Al Qaida-inspired militants. The militants have seized and are continuing to hold parts of the provincial capital, Ramadi, and nearly all of the nearby city of Fallujah.

Last year, Iraq weathered its deadliest bout of violence since it pulled back from the brink of civil war in 2008. United Nations figures show that violence killed 8,868 people in 2012.