At least 20 people were detained as part of an investigation into the outlawed Kurdistan Workers’ Party (PKK) Monday.

Police carried out operations at several locations in Ankara, Istanbul, Izmir, Diyarbakır and Bursa provinces as part of an investigation ordered detention of 28 people on charges of terrorist propaganda.

At least 20 people were detained, Haberturk said. Detainees include former Peoples’ Democratic Party (HDP) deputy Mulkiye Birtane, several current members of the party and some labor union members.