The Taliban have moved closer to retaking full control of Afghanistan, with the capital Kabul now the only major city left in government hands.
On Sunday the militants took control of Jalalabad, a key eastern city, without a fight.
It means they now control all roads to neighbouring Pakistan.
Correspondents in the capital say there are queues at the airport with people trying to flee, and some shops and government offices have been evacuated.
The Taliban has ordered their fighters to stay at entry points to the capital, urging people to stay in the country.
Talks with senior officials in President Ashraf Ghani’s government on a peaceful transfer of power continued, its statement said.