Two Germans were abducted on Tuesday at the industrial complex in which they worked in the Iraqi city of Baiji.
The two men, according to Iraqi police, were engineers employed by a detergent factory near the town's oil refinery, reported Reuters.
The refinery is the largest in the country.
Also on Tuesday, at least one Iraqi civilian and one policeman were injured when a car bomb targeting a police patrol exploded in Baghdad.
According to the AP, the attack occurred in the Wahda neighborhood in the eastern section of the capital, near Tahrir Square.
Bomb targeting British military patrol injures 20 high-school students in stead
Also on Tuesday, a roadside bomb which exploded in the city of Basra in southern Iraq wounded twenty high school students as they were leaving their school after writing their mid-term examinations.
British military officials explained that the target of the bomb was supposedly a British army patrol, and not the students, according to Reuters.
Two of the students are in serious condition. A British soldier was also wounded in the attack.
Three Iraqis killed, 20 kidnapped; seven US soldiers die since Friday
Iraqi sources revealed that three men were killed on Monday and at least 20 kidnapped when gunmen ambushed a Sunni neighborhood in Baghdad.
The men, according to the AP, were wearing uniforms of a Shiite-led security force.
US military sources also revealed that a total of seven US soldiers had been killed since Friday.
On Monday a roadside bomb in Baghdad killed one soldier, an explosion north of Baghdad killed two more troops, while four soldiers were killed in northern Iraq by a roadside bomb on Friday.