Coalition spokesman Capt. Patrick Simmons confirmed the death. The bomb was set off by remote control today as a convoy reached the outskirts of Qalat, capital of Zabul province, said district governor Abdul Khaliq Ayubi. He says another three troops were wounded.
NATO usually waits for member countries to announce the nationalities of casualties.
Most of Afghanistan's security is now in the hands of the Afghan National Security Forces ahead of the withdrawal of international combat troops at the end of December. Still, international service personnel occasionally patrol troubled areas and assist Afghan troops when requested.