Turkish police have detained 18 people for "praising terrorism" after the killing of soldiers last week, while a high-level outlawed Kurdistan Workers' Party (PKK) member was "neutralised" in northern Iraq, authorities said on Monday. Nine Turkish soldiers died in clashes with the PKK in northern Iraq on Friday, prompting Ankara to conduct air strikes and operations both there and in northern Syria. The PKK, designated a terrorist group by Turkey, the United States and the European Union, took up arms in 1984 for the rights of ethnic Kurdish people.