Reports say the attacks happened in and around Baghdad, with at least eight people killed when a car bomb exploded outside a market in a mainly Shia district of the capital.
A dawn car bomb also targeted a government building in the nearby predominantly Sunni city of Taji.
June has been a particularly violent month in Iraq.
Nearly 200 have now reportedly been killed there since 13 June alone, far higher than the figure for May.
There are also uncomfirmed reports that a police patrol and a roadblock manned by militamen trying to prevent al-Qaeda attacks were targeted on Thursday.
On Wednesday, a Shia cleric's home in south Baghdad was targeted with two bombs, killing and wounding several people.
Most of the recent attacks have targeted the majority Shia community and have been blamed on Sunni militants linked to al-Qaeda in Iraq.
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