Two members of the Communist Party of Turkey (TKP) were detained by police in the southern city of Niğde. The communists raised objections to an obvious violation of referendum rules in a polling location, Niğde Anatolian İmam Hatip High School.
They observed that more than one people were allowed to go into the voting booths together and this happened several times.
Turks began voting Sunday in Turkey's tightly-contested referendum on expanding the powers of President Recep Tayyip Erdoğan, seen as a crossroads in the modern history of the country.
