Police carried out multiple operations to detain at least 45 officials from pro-Kurdish Republican Peoples’ Party’s (HDP) Istanbul and Adana branches, early Monday.

Istanbul police took into custody 20 HDP officials including the party’s Istanbul branch head Aysel Güzel on terrorism charges.

Meanwhile 25 people, among them executives from HDP’s Adana branch along with district representatives, were detained in Adana.

While 500 police officers were reported to have involved in Adana operations, HDP’s Adana branch head Hüseyin Beyaz is also among the detainees.

HDP Spokesperson Ayhan Bilgen tweeted the same day that İbrahim Binici, co-chair of the the party’s Ankara branch was also detained.

Turkey has stepped up its crackdown on Kurdish politicians in recent months. Trustees have been appointed to dozens of municipalities in the country’s predominantly Kurdish Southeast while Turkish courts earlier this month arrested 10 pro-Kurdish Peoples’ Democratic Party (HDP) deputies. Co-chairs Selahattin Demirtaş and Figen Yüksekdağ and deputies İdris Baluken, Leyla Birlik, Nursel Aydoğan, Selma Irmak, Ferhat Encü and Gülser Yıldırım were arrested on Nov. 4.