Eight Iraqi employees working in the Baiji electric power facilities were killed by gunmen on Thursday. An Iraqi security source told Kuwait News Agency (KUNA) that unknown gunmen attacked with machineguns a group of employees leaving the facilities to their residence. The attack was preceded by another today when an oil pipeline caught fire due to blasts with unknown causes.Also, four Iraqis were killed today and 22 others were wounded in a series of attacks using explosive devices and a booby-trapped car in Baghdad. Meanwhile, an Iraqi Interior Ministry source announced that the number of mortar rounds targeting the military college headquarters, used as a base by the US forces, reached 22 rounds, while losses were not figured yet.