Taliban insurgents entered Afghanistan's capital Kabul on Sunday and an official said President Ashraf Ghani had left the city for Tajikistan, capping the militants' lightning push for power.
A senior Afghan Interior Ministry official said Ghani had left for Tajikistan. Asked for comment, the president's office it "cannot say anything about Ashraf Ghani's movement for security reasons".
A representative of the Taliban said the group was checking on Ghani's whereabouts.
American diplomats were evacuated from their embassy by chopper after a swift advance by the militants, who were poised to run Afghanistan again 20 years after they were toppled by U.S.-led forces following the Sept. 11 attacks on the United States.
Taliban fighters were reaching the capital "from all sides", a senior Afghan interior ministry official told Reuters.
But there were no reports of fighting and the group's spokesman Zabihullah Mujahid said they were waiting on the outskirts and were in talks with the Western-backed government for a peaceful surrender.
"Taliban fighters are to be on standby on all entrances of Kabul until a peaceful and satisfactory transfer of power is agreed," he said.
Representatives from the two sides were due to meet in Qatar on Sunday, Fawzi Koofi, a member of the Kabul negotiating team, told Reuters. A source familiar with the matter said they would discuss a transition of power and U.S. officials would also be involved.