Kabul , Afghanistan ( CNN ) -- Roadside bombs killed two service members in separate attacks Friday in southern Afghanistan , NATO said , marking the eighth death in the region in the past three days . On Thursday , five Americans were killed in an improvised explosive device attack . An additional service member died Thursday in a similar strike in eastern Afghanistan . No other information was provided . The rash of attacks comes on the heels of the worst single-incident loss of life for Americans since the Afghan war started nearly a decade ago . Thirty U.S. service members , including 17 Navy SEALs , were killed Saturday when their helicopter was apparently shot down by insurgent fire in the eastern central province of Wardak . Sgt . Daniel J. Paton , 26 , of Canton , Ohio , was also killed that day in a roadside bomb in Helmand province . The attacks coincide with a NATO drawdown and a transition of security to national forces . Ten thousand U.S. soldiers are scheduled to depart Afghanistan by year 's end , with the full drawdown set for the end of 2014 . `` The endgame for NATO is to hand over security responsibility over all of Afghanistan to the Afghan security forces , '' said Brig . Gen. Carsten Jacobsen , a spokesman for the NATO-led International Security Assistance Force . `` Once we have achieved that , the NATO mission can come to an end . '' Critics question the readiness of Afghan security forces , particularly those operating in the country 's restive eastern and southern border provinces . Jacobsen said NATO forces aim to provide a more manageable scenario for local forces `` against only very reduced numbers of terrorists . '' But , he said , it `` will have to be seen in the three and a half years that we 've got left . '' Newly appointed U.S . Ambassador to Afghanistan Ryan Crocker said last month that a U.S. military presence in the country could extend beyond the 2014 date . Still , he emphasized that America `` has no interest in permanent bases in Afghanistan . '' `` We will stay as long as we need to and not one day more . '' Roughly 150,000 International Security Assistance Force members are deployed in Afghanistan , including fewer than 100,000 from the United States . Meanwhile , NATO reported Friday that two insurgents were killed and several more detained after a joint coalition-Afghan operation in the northern Baghlan province . The raid targeted a `` Taliban facilitator '' responsible for coordinating a network of suicide bombers who were preparing an `` imminent attack '' on provincial government officials . The whereabouts of the facilitator are not clear . NATO says coalition forces also detained an insurgent leader in Kandahar province , a Taliban heartland often considered their birthplace .
Thursday : Two NATO service members died in two attacks in southern Afghanistan . On Friday , five Americans were killed in another attack in the region . NATO says two Americans were killed in northern Kabul province .