Kabul, June 15 -- : At least 20 civilians have been killed in various regions of Afghanistan during clashes between the security forces and the Taliban in the past 24 hours. Three district centres have fallen to the Taliban during this period.

In the eastern province of Nangarhar, unidentified gunmen killed five aid workers providing polio vaccines and wounded four more, reported TOLO News.

"After this incident, the provincial leadership and our international partners decided to halt the vaccination campaign in Nangarhar province," said Najib Kamawal, the head of the polio vaccination campaign in the east, adding that this was the second attack on workers administering the polio vaccine in Nangarhar.

Meanwhile, lawmakers from Sar-e-Pul p...