At least one American soldier was killed and four companions wounded Saturday in an attack near Tikrit north of the capital, a US military statement said. It was at least the seventh U.S. soldier killed in attacks in Iraq over the past two weeks. Unidentified attacker opened fire on the troops using small arms and a rocket-propelled grenade, said the brief statement released by U.S. Central Command. The injured troops were evacuated by helicopter and ambulance to medical facilities in the area, the statement said. The names of the soldiers and their unit were withheld to allow notification of relatives. Tikrit, which remains a sensitive area as American forces try to keep a fragile peace in postwar Iraq, is located about 120 miles north of Baghdad. Dozens of U.S. soldiers have been killed or injured in a spate of attacks in central Iraq since the end of the war nearly two months ago. Meanwhile, one U.S. soldier died and two were wounded Friday in a road accident about 20 miles north of Baghdad. A military statement said they were providing security escort to Coalition Provisional Authority personnel at the time of the accident. The wounded soldiers were evacuated to a field hospital for treatment. **U.S. Troops Attacked in Falluja, Kill One Iraqi*** Meanwhile the U.S. forces have killed an Iraqi after coming under attack with rocket-propelled grenades and automatic weapons in the restive town of Falluja, the U.S. military said on Saturday. Unidentified gunmen opened fire on the soldiers in Falluja, 45 miles west of Baghdad late on Friday night. Troops returned fire, killing one attacker and another fled the scene, U.S. Central Command said in a statement on its Web site. Falluja is a cauldron of hostility to U.S. forces, who killed 15 townspeople in two clashes there in April after a U.S.-led invasion toppled president Saddam Hussein. There have been several attacks on troops since then, which the U.S. military has blamed on supporters of Saddam. **PHOTO CAPTION*** The US Army military police sweep a neighborhood to arrest suspected Ba'ath Party members in the Iraqi city of Falluja, about 60 km west of the capital Baghdad, June 6, 2003. REUTERS/Jamal Saidi