Afghanistan President Ashraf Ghani has left the capital Kabul for Tajikistan, a senior Afghan Interior Ministry official said on Sunday.
The president's office said it "cannot say anything about Ashraf Ghani's movement for security reasons".
A representative of the Taliban, which entered the capital Kabul earlier on Sunday, said the group was checking on Ghani's whereabouts.
Taliban insurgents entered Afghanistan's capital Kabul on Sunday and said they expected to take power within days, promising to moderate their earlier hardline Islamist rule even as foreign diplomats and many locals tried to leave.
American diplomats were evacuated from their embassy by chopper after a lightning advance