More than 18,000 people have been flown out of Kabul since the Taliban took over Afghanistan's capital, a NATO official said on Friday, pledging to redouble evacuation efforts as criticism of the West's handling of the crisis intensified.
Thousands of people, desperate to flee the country, were still thronging the airport, the official, who declined to be identified, told Reuters, even though the Taliban have urged people without legal travel documents to go home.
The speed with which the Islamist militant Taliban conquered Afghanistan as U.S. and other foreign troops were completing their withdrawal surprised even their own leaders and has left power vacuums in many places.
The Taliban called for unity ahead of Friday prayers, the first since they seized power, calling on imams to persuade people not to leave Afghanistan amid the chaos at the airport, protests and reports of violence.
Residents in Kabul and four other major cities said prayers appeared to have passed off with incident, though attendance was low.
A witness told Reuters several people were killed in the eastern city of Asadabad on Thursday when Taliban militants fired on a crowd demonstrating their allegiance to the vanquished Afghan republic, as the Taliban set about establishing an emirate, governed by strict Islamic law.
There were similar shows of defiance in two other cities - Jalalabad and Khost - in the east, with Afghans using celebrations of the nation's 1919 independence from British control to vent their anger with the Taliban takeover.
Another witness reported gunshots near a rally in Kabul, but they appeared to be Taliban firing into the air.
A Taliban spokesman was not immediately available for comment.
Kabul has been largely calm, except in and around the airport where 12 people have been killed since Sunday, NATO and Taliban officials said.
White House national security adviser Jake Sullivan said in an interview with NBC News that the United States was "laser-focused" on "the potential for a terrorist attack" by a group such as Islamic State during the evacuation.
Criticism of NATO and other Western powers has risen as images of the chaos and desperate fear of Taliban rule were shared around the world.
In one scene captured on social media, a small girl was hoisted over the airport's perimeter wall and handed to a U.S. soldier.
U.S. President Joe Biden was set to speak about the evacuation efforts at 1 p.m. (1700 GMT) on Friday, having faced a torrent of criticism for his handling of the troop withdrawal, negotiated by the previous U.S. administration.