A British security firm says four of its employees have been killed and 15 others wounded in an attack in Baghdad's heavily fortified "Green Zone," which houses the Iraqi government and the U.S.-led coalition.
A spokesman for the "Global Risk Strategies" firm declined to say Friday what kind of attack occurred, but said the incident took place on Thursday.
The development came as Iraqi authorities said an Iraqi policeman was killed and three others wounded when insurgents attacked a police station late Thursday in Rashad, southwest of the northern city of Kirkuk.
Also Friday, the U.S. military said Marines have cleared more than half the houses of weapons in the restive city of Fallujah, after mounting an offensive to crush the city's rebels. On Thursday, a large cache of weapons and an apparent chemical weapons laboratory was discovered in Fallujah.
Some information for this story provided by AFP and Reuters.