An insurgent ambush killed four soldiers in western Afghanistan Saturday, according to an official. Provincial spokesman Fawad Askari said another four were wounded Saturday afternoon in the attack on an Afghan National Army foot patrol along the main highway in western Afghanistan's Farah province. Zia Durrani, police spokesman for Kandahar Province, said Saturday that four policemen had died there a day earlier when a roadside bomb explosion hit a police vehicle. One policeman was wounded in the blast, which occurred in the Spin Boldak district of Kandahar Province, near the border with Pakistan, AP reported.