Four NATO service members died in three separate weekend incidents in Afghanistan, the NATO-led International Security Assistance Force said Sunday. One service member died Saturday in an insurgent attack, ISAF said in a statement. On Sunday, two service members died in a road accident in the region. A service member also died as a result of a non-battle-related injury in western Afghanistan. At least 209 NATO services members have been killed in Afghanistan since the beginning of 2012, Khaama Press reported.