The 13-year-old girls, studying in seventh standard in a private school had left home for the school in a van, along with some other students.
The parents filed police complaints after they received messages from the school auhorities about the children's abence.
The parents and relatives of the girls laid siege seeking the whereabout of their children.
Inquiry with the parents revealed that the girls have taken some clothes with them and the missing could be a pre-planned one.