A roadside blast wounded five Italian Special Forces soldiers in northern Iraq on Sunday as they were on a training mission to assist Iraqi troops, Italian military officials said. The Italian Defense Ministry said three of the wounded were in "grave condition" as an improvised explosive device detonated. An Iraqi security official said the bomb exploded next to their vehicle while they were traveling just outside Kirkuk, wounding six Italian soldiers. The discrepancy in the number of wounded wasnt immediately explained. The wounded were evacuated by US military helicopters to hospital in Baghdad. One Italian soldier lost a leg to amputation due to injuries from the bomb and another suffered serious internal injuries, Italian Gen. Nicola Lanza de Cristoforis told state TV. The defense ministry said the soldiers are part of a special forces team who were carrying out an international "mentoring and training" mission of Iraqi armed forces involved in the fight against ISIS. Currently, Italy has about 800 regular soldiers and 80 special forces in Iraq.