The Afghan intelligence service, the National Directorate for Security, said among the 700 are at least 75 women and 159 children. Many of the group are from foreign countries. Many were arrested, but some turned themselves in.
The NDS said all of the fighters and family members were transported to the NDS compound in Kabul. Earlier, security forces had surrounded dozens of remaining fighters in their homes in various districts in the region. The NDS said the operation was ongoing.
There was no way to independently confirm that the prisoners the government presented to reporters and photographers at the NDS compound Saturday are affiliated with the Islamic State group.
Most of the arrested IS members are from Pakistan, Jordan and Central Asian countries, said an NDS officer who asked that his name not be used as agency rules don't allow him to be identified.
As many as 277 foreigners are among the arrested militants, he said.
Graham, speaking from the Afghan capital of Kabul, said the president could reduce troop numbers to 8,600, down from the current estimated 12,000.