Authorities in Turkey said on Tuesday that they had removed the mayors of Kayapinar, Bismil and Kocakoy, towns located in Diyarbakir Province in the Southeast, and the mayor of Ercis, a town in the eastern province of Van. All four belong to the pro-Kurd Peoples’ Democratic Party (HDP), which is accused of maintaining ties to Turkey’s outlawed Kurdistan Workers’ Party (PKK). Ankara has labeled PKK a terrorist organization. Turkey recently launched an incursion into northeastern Syria to drive out the Syrian-Kurdish YPG militia from along the border, saying that it, too, provides aid to PKK. This brings to 12 the number of HDP mayors ousted since a crackdown began in March. According to the offices of the provincial governors, the four mayors most recently removed are under arrest on charges related to terrorism.