(KUNA) -- Multi-National Forces (MNF) in Iraq said on Friday that three soldiers were injured when an explosion rocked their patrol vehicle south of Baghdad. A source from the MNF said an improvised bomb device planted on the side of the road exploded when an MNF patrolling vehicle was passing by northwest of the city of Kout in the south of Iraq. Two soldiers from Poland and one from El-Salvador were injured, the source added. An Iraqi police source from a town close to Kout said that a similar bomb exploded when a US military vehicle was passing by, however there were no reports of causalities.