A local official told the BBC all but the city's airport had fallen to the militants. The group's flag was seen raised in the city centre.

Chaotic scenes have been reported with buildings and shops ablaze, reports BBC.

The Taliban has captured four important regional capitals in the country so far since Friday.

Kunduz remains the most crucial city among them all.

The militants also fought their way into another northern city, Sar-e-Pul, which was captured within hours of Kunduz. Afghan officials insist their forces still remain in the cities that have fallen, and fighting is ongoing, reports BBC.

Violence has escalated in Afghanistan ever since foreign forces started leaving the country.

The Taliban group started capturing several regions in the war-torn nation since then.