The state-appointed governors will replace the dismissed mayors. Mayor Mehmet Demir and Deputy Mayor Şehriban Aydın were detained in Batman.
Silvan District Governor Mehmet Uslu was appointed as trustee in place of the Mayor of Silvan.
Silvan Municipality Co-Mayor Naşide Toprak and Ergani Municipality Co-Mayor Ahmet Kaya were also detained.
A group of the Peoples' Democratic Party (HDP) members protesting the appointment of trustees in Batman were detained by Turkish security forces.