Five US soldiers died in Iraq, the US military announced Friday, including three who were killed in an explosion near their vehicle. All five were assigned to Task Force Lightning, the military said. Three were conducting operations Thursday in Kirkuk province, in northern Iraq, when a bomb exploded near their vehicle, the military said in a statement. Another soldier was wounded in the blast, it said. A fourth soldier was killed by small arms fire the same day in Diyala province, northeast of Baghdad, another statement said. Another soldier died Wednesday in a non-combat related incident, which the military said it was investigating.