The operation ended a several-hour confrontation between members of the opposition CHP and their new court-appointed leadership.
A court previously annulled the 2023 congress that elected Özgür Özel as party leader, and reinstated former leader Kemal Kilicdaroglu. However, most within the party support Özel, who has remained at party headquarters with the leadership since Thursday.
The party has faced several lawsuits and arrests, and legal proceedings are ongoing against several CHP politicians. Among them is the imprisoned Istanbul mayor Ekrem Imamoglu, who is seen as Erdogan's main rival.
Analysts believe that the legal proceedings are aimed at weakening the CHP ahead of the 2028 elections.
