Attacks killed seven people in Iraq's western province of Anbar on Sunday, while gunmen kidnapped five others, officials said.
The dead included three Syrian truck drivers, while three police were among those kidnapped.
Armed men killed the truck drivers and set their vehicles on fire near the town of Al-Rutba, close to the Syrian border, officials said.
A civilian and a policeman were kidnapped near the site where the truck drivers came under attack, while armed men abducted two more police and a civilian north of Al-Rutba.
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It was unclear if the same group of gunmen carried out all the kidnappings.
In separate attacks in and around Fallujah, meanwhile, four people were killed, including two soldiers and a policemen, while three others were wounded.
Iraq has been hit by a wave of violence that killed more than 600 people in May, raising fears of all-out sectarian conflict.
Violence has fallen from its peak in 2006 and 2007, when more than 1,000 people were killed in some months, but death tolls have started to rise again.