Video shows thousands of Afghans at Kabul airport attempting to flee, as the Taliban took over the capital.
Gunshots were heard on Monday morning, with eyewitnesses telling the BBC that civilians had been killed. US troops reportedly fired into the air to scatter the crowds.
The Taliban have taken control of Afghanistan, almost 20 years after being ousted by a US-led military coalition.
Follow live updates: Chaos at Kabul airport as Afghans try to flee Taliban