Counter-terrorism and intelligence police units in Turkey are hunting for three ISIS operatives who according to a tip-off were ordered to conduct attacks across Turkey in crowded places, especially in Istanbul. They have published the photos of Hacı Ali Dumaz, codenamed Mervan; Savaş Yıldız, codenamed Ebu Cihat; and Yunus Durmaz, who uses the codenames Abdüllatif Efe, Sarı Yunus and Muhammed Ali. Yildiz was already sought over bomb attacks in Adana and Mersin in May 2015.