Taliban and NATO officials said, on Thursday, that 12 people have been killed in and around Kabul's airport since the Taliban controlled the city on Sunday, causing a rush of fearful collaborators to flee.

A Taliban official added that they died as a result of gunshots or a stampede, warning people to leave and go back to their homes.

"We don't want to hurt anyone at the airport," an official said.

Three people were killed and more than a dozen injured after Taliban fighters opened fire during protests in the Afghan city of Jalalabad.

Fighters are reported to have fired shots at people for not waving the Taliban flag, witnesses say.

Another witness named Mohammed Salim from the eastern city, the capital of Kunar province said it was unclear if the casualties in Asadabad resulted from the firing or from the stampede that it triggered. 

It is noteworthy that the Taliban fighters entered the Afghan capital, Kabul, without a fight, pledging to "provide safety for all those working with the former Afghan administration."