According to reports, around 300 Taliban militants have taken part in the offensive which led to fall of Sada district to Taliban control.
Local officials have confirmed heavy clashes between Taliban militants and Afghan security forces which erupted early Wednesday.
Provincial governor spokesman, Abdulhai Khatebi confirmed that over 200 Taliban militants have launched an offensive in Char Sada district.
Khatebi further added that heavy clashes are still going on in the area and said there are no reports regarding the casualties so far.
The Taliban militants group has not commented regarding clashes so far.