A Turkish court has issued detention warrants for HDP deputies İbrahim Ayhan and Dilek Öcalan on charges of disseminating terrorist propaganda on social media.

According to Evrensel daily, as part of an investigation launched by Urfa public prosecutor, the two deputies are being sought for posting tweets favoring the Kurdistan Workers’ Party (PKK).

Dilek Öcalan, niece of Abdullah Öcalan, the jailed leader of the outlawed Kurdistan Workers’ Party (PKK), faces up to five years in jail due to her participation in the funeral of PKK militant Mehmet Yılmaz on Feb. 23, 2016.

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 in late 2016 arrested 11 HDP deputies, including the party’s Co-chairs Selahattin Demirtaş and Figen Yüksekdağ. One of these deputies, İdris Baluken, was released from jail on Monday. With the arrest of two more HDP deputies, there are currently 12 HDP deputies behind bars.