The internally displaced tribesmen from North Waziristan Agency and MNA Nazir Khan were also present in the sit-in.
Marvi Memon strongly condemned the use of force against IDPs and demanded the provincial government to release the detained IDPs.
She said the sit-in would continue till release of the IDPs.
A local court had sent over 90 IDPs to jail on judicial remand. Meanwhile, IGP Nasir Durrani directed the Bannu police to withdraw cases against the arrested IDPs.