A roadside bomb killed an Afghan woman and wounded three people and an Afghan army soldier opened fire on NATO troops, injuring five, officials said Wednesday. The bomb struck a civilian vehicle Wednesday in the southern Afghan province of Helmand, the provincial governor's office said. Among the injured in Marja district was a child, it said. Separately, a man in Afghan National Army uniform opened fire Tuesday on a group of US soldiers in the eastern province of Maidan Wardak, an Afghan official said. "The attacker has managed to escape, but police and coalition forces have started a search operation to arrest him," he said. The shooting took place in the Sayed Abad district, according to a report of DPA. Major Martyn Crighton, a spokesman for the NATO-led International Security Assistance Force (ISAF), confirmed the incident. "There were no ISAF fatalities, but there were ISAF soldiers wounded in the incident and were taken to the hospital," he said.