Kabul, Sha'ban 19, 1433, Jul 9, 2012, SPA - Six ISAF Service Members were killed in a roadside blast today in eastern Afghanistan, a U.S. official told ABC News. Details about the deadly incident remain vague. Earlier today, a press release by NATO's International Security Assistance Force said six ISAF service members "died following an improvised explosive device attack in eastern Afghanistan today." The nationalities of the victims were not identified because "it is ISAF policy to defer casualty identification procedures to the relevant national authorities," the statement said. A U.S. official confirmed to ABC News that the six killed in today's attack were Americans, but did not have specific details about the incident. --SPA 12:59 LOCAL TIME 09:59 GMT www.spa.gov.sa/1014175