The Taliban called on Afghanistan's imams to urge unity when they hold their first Friday prayers since the Islamist group seized control of the country, as protests against the takeover spread to more cities on Thursday, including the capital, Kabul.

Several people were killed when Taliban militants fired on a crowd in the eastern city of Asadabad, a witness said. Another witness reported gunshots near a rally in Kabul, but they appeared to be Taliban firing into the air.

On the day Afghanistan celebrates its independence from British control in 1919, a social media video showed a crowd of men and women in Kabul waving black, red and green national flags.