Another American civilian was killed Saturday in what was described to ABC News as a "massive firefight" in eastern Afghanistan that led U.S. forces to call in an airstrike that Afghan officials say killed 11 Afghan civilians, 10 of them children.
In a statement, ISAF said they were aware of several civilian injuries resulting from "fire support" provided in the incident but no civilian deaths. They said they were assessing the incident.
On Saturday, Afghan and American forces had launched a joint operation in three villages located in Kunar Province to root out Taliban fighters.
The American civilian, who had been advising Afghan forces, was killed as the U.S. and Afghan forces took heavy fire from multiple homes.
Afghan officials told ABC News that the unit called in an airstrike and that some of the weapons they dropped went errant. Ten children were killed when the roof of their home collapsed as a result, the officials.
An Afghan police official said eight Taliban fighters were also killed during the operation.