Faryab's Bulcheragh district fell to the Taliban on Saturday night and the whereabout of 100 Afghan security forces is still not clear, a source confirmed on Sunday. 

According to the source the security force members might have surrendered to the Taliban. 

Sources also said that Gerziwan district of Faryab is also on the verge of collapse if reinforcements are not sent to the district

Bulcheragh district is located 60km from Maimana city, the capital of Faryab province. 

Taliban has confirmed the collapse of the district.