A lawyer claimed that PTI leader Zartaj Gul was arrested from her home in Dera Ghazi Khan, 24NewsHD TV channel reported on Saturday.
PTI has been on a demo to show solidarity with the judiciary after its founder gave a countrywide protest call from jail on September 30.
Advocate Maher Fida Hussain said Gul was sleeping in her house when more than 100 policemen and plainclothesmen raided her home and took her away.
He said the raiding team also confiscated the mobile phones from the persons filming the raid.