An Afghan policeman prevents journalists from approaching Cure International Hospital in Kabul, Afghanistan, Thursday, April 24, 2014. The U.S. embassy in Afghanistan says three American doctors have been killed at by an Afghan security guard who opened fire at a hospital in Kabul. The shooting at Cure International Hospital in western Kabul was the latest attack on foreign civilians in the Afghan capital this year. (AP Photo/Massoud Hossaini)
KABUL, Afghanistan — The NATO-led military coalition in Afghanistan says five of its troops have been killed in a helicopter crash in the country's south.
The coalition said it was investigating the circumstances of the crash but gave no other information. The nationalities of those killed were not released.
The U.S.-led NATO force is preparing to withdraw its troops from Afghanistan at the end of this year.