Militants launched separate attacks shortly after sunset Sunday in northern Iraq and Baghdad, killing at least 13 people and wounding dozens.
In the deadliest attacks, gunmen killed three policemen and four detainees traveling in a police convoy near the northern city of Baiji, and a car bomb killed six civilians and wounded 21 others at an outdoor market in the capital's Sadr City neighborhood.
Insurgent attacks have intensified since last year in an attempt to undermine Iraqi government efforts to maintain security nationwide.  According to United Nations figures, 8,868 people were killed last year.

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