NEW : ISAF , U.S. military officials confirm the two missing troops are Americans . Comment: The intelligence source told CNN that the two were abducted in Logar province , south of Kabul -- Afghanistan 's capital . NATO 's command said the two troops went missing after they left a Kabul compound . A search is on for the service members .
NEW : ISAF , U.S. military officials confirm the two missing troops are Americans . Comment: NATO 's command said the two troops went missing after they left a Kabul compound . A search is on for the service members .