Some 12 people in Turkey's northwestern province of Eskişehir and two people in Istanbul were detained within the investigations over the Ankara car bomb attack that killes at least 37 people.
Their links with the Ankara attack is investigates within the "operation", while procedural acts continue against the suspects, said Eskişehir Mayor Güngör Azmi Tuna.
The suspects have been making "propaganda of the terror organization" and have been in "different acts" in this regard, he added.
The suspects were originally not from Eskişehir, but students and people from outside the province, said Mayor Tuna. Some documents with links to some organizations were found, he said.