NATO said Monday that another two service members died in an insurgent attack in eastern Afghanistan the previous day, raising the toll of those killed in the single incident to five.
The international military coalition did not provide details on the attack or the nationalities of the service members. Though a number of nations have troops in the east, the majority of the forces are American.
NATO announced three of the deaths Sunday, then added two more on Monday.
The deadly strike came a day after Taliban fighters stormed a NATO base in eastern Afghanistan, showing the insurgents' determination to stage attacks despite a surge of U.S. troops and firepower.
In eastern Kunar province on Monday, an insurgent rocket struck inside a U.S. base near the provincial capital of Asadabad, sparking a blaze that destroyed six armored vehicles and an ambulance, NATO and Afghan officials said.