The NATO force in Afghanistan says a homemade bomb has killed four children and a civilian adult in a northeastern province. International troops and Afghan security forces are evacuating at least three more wounded children to a military hospital after Thursday morning's explosion in Kapisa province, north of the capital, Kabul. A NATO spokesman said no Afghan or foreign military were in the area of the explosion. He said it was unclear where the bomb had been planted, and no other details were immediately available.