The “yes” campaign won 1.25 million more votes than the “no” campaign and with only about 600,000 votes still to be counted this means the changes have been approved,
Turkish President Recep Tayyip Erdogan and the country's prime minister have declared victory in Sunday's referendum designed to hand Erdogan sweeping powers.
Those who support the reforms believe they will kick-start a lethargic economy and stabilize a nation dealing with the resurgence of a 30-year conflict with militants from the Kurdistan Workers Party (PKK). But opponents argue the proposals will lead to the formation of a constitutional dictatorship.
The arrests of 47,155 government critics, academics, journalists, military officials and civil servants have draw widespread international condemnation and strained Turkey's relations with the European Union.