KABUL, Afghanistan, Dhu Al-Hijjah 04, 1431, Nov 10, 2010, SPA - Insurgents killed four policemen in an ambush in northern Afghanistan, while a string of militant attacks claimed the lives of three NATO service members and one person from a de-mining team, officials said Wednesday. The attack on the police vehicle took place Tuesday night as it was driving through Imam Sahib district along the border with Tajikistan, said Muhbobullah Sayedi, a spokesman for the governor Kunduz province. NATO on Wednesday confirmed the deaths of three coalition service members. Two died in the south - one in a bomb blast Tuesday and another during an insurgent attack on Wednesday. The third coalition service member died Wednesday in fighting in the east. So far this year, 625 U.S. and international troops have died in Afghanistan, according to a count by The Associated Press. --SPA 13:34 LOCAL TIME 10:34 GMT www.spa.gov.sa/835191