Afghan President Hamid Karzai today said that 31 U.S. special forces and seven Afghan soldiers were killed when a NATO helicopter went down in eastern Afghanistan overnight.
The crash, one of the single deadliest incidents for foreign troops since the war began, took place in Wardak Province.
In a statement, Karzai extended his condolences to U.S. President Barack Obama, saying he "expresses his sympathy" for the victims of the crash.
The Taliban have claimed responsibility for the incident.
Shahidullah Shahid, a spokesman for the provincial governor, said the chopper crashed in Seyad Abad district. He could not confirm if it was shot down by insurgents.
NATO spokesman Tim James confirmed the crash, saying there were enemy activities when the helicopter went down. But he refused to comment if it was shot down by the Taliban.
compiled from agency reports