Two U.S. soldiers and their Afghan interpreter were killed on Saturday when the vehicle they were travelling in struck an "improvised explosive device" in south Afghanistan, a statement issued by the U.S.-led military said. A third soldier was wounded in the blast in Ghazni province, around 260 km southwest of Kabul, the statement said. The wounded soldier was flown to Kandahar Airfield hospital and was in a stable condition, it added. Some 20,000 U.S.-led troops are stationed in Afghanistan hunting for the remnants of Taliban and al Qaeda, including Osama bin Laden. More than 60 U.S. military personnel have died in conflict in Afghanistan since the Taliban were driven from power in late 2001.