The four bank workers, who have been working for a local branch of Da Afghanistan Bank in the Islam Qala border township, had been kidnapped by militants loyal to Taliban in Kohsan district a few days ago, provincial police department said in a statement.
The four were released late on Saturday by the efforts of the provincial police command and the intervention of the local elders, according to the statement.
The released people with good health condition joined their households early Sunday, the statement added.
Taliban militants frequently detain civilians and off-duty soldiers from across villages and highways and punish civilians for spying for government security forces.
The militant group has not made a comment on the report so far.