U.S. aircraft launched new air strikes in the rebel-held city of Falluja on Saturday aimed at killing supporters of a Jordanian militant who has led a campaign of suicide bombings and kidnappings in Iraq. In one attack, the U.S. military said it targeted supporters of Abu Musab al-Zarqawi and that no innocent civilians were in the area. In a second operation, U.S. forces responded with a "precision air strike" against a house after American troops came under small arms and rocket-propelled grenade fire. "Intelligence sources reported that Zarqawi terrorists were using the site to plan additional attacks against Iraqi citizens and multinational forces," U.S. forces said in a statement. "There were no innocent civilians reported in the immediate area at the time of the strike," it said. "Multinational forces took multiple measures to minimise collateral damage and civilian casualties."