Shootings and bomb attacks in Baghdad and Iraq's main northern city Mosul mostly targeting officials and security forces killed at least 12 people on Saturday, the country's deadliest day this month.
In the bloodiest attack, twin roadside bombs in a market area in the north Baghdad neighbourhood of Kadhimiyah killed at least eight people and wounded 49, an interior ministry official and medical sources said.
The two blasts struck the Baab al-Darwazah area in the predominantly Shiite district.
Also in the capital, gunmen with silenced weapons opened fire on a police patrol in Shaab, north Baghdad, killing two policemen, the officials said.
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An official working at a prison on Baghdad's outskirts was meanwhile shot dead by gunmen as he was driving on the Al-Qanat highway in east Baghdad, according to justice ministry spokesman Haidar Saadi.
Another prison official in the car was wounded.
And in Mosul, 350 kilometres (220 miles) north of the capital, gunmen killed a soldier while he was outside his home on leave in the east of the city, officials said.
Saturday's overall death toll was the highest in Iraq since September 30, when 33 people were killed and 106 wounded nationwide.
Violence is down sharply across Iraq from its peak in 2006 and 2007, but attacks are still common, especially in Baghdad and Mosul. At least 250 people have been killed as a result of unrest in each of the past four months.