Responding to the results, Mr. Erdogan said Turkey had made a historic decision in backing an executive presidential system, adding that the "Yes" camp had secured 25 million referendum votes, 1.3 million ahead of "No".
EU Commission spokesman Margaritis Schinas echoed concerns about the vote's legitimacy, asking Turkish officials to "launch transparent investigations into these alleged irregularities found by the observers".
"We have said this over and over in my speeches".
Turkey's main opposition party urged the country's electoral board Monday.
A prosecutor will now consider whether to press charges against Guven.
Turkish Prime Minister Binali Yildirim called on Tuesday the country's opposition to respect the referendum result that grants the president sweeping powers. The deputy chairman of the opposition Republican People's Party (CHP) said on Tuesday that his party had done the same, and would use all legal paths to challenge the vote. "The opposition should not call people to take to the streets and say they do not recognize election results".
Demonstrators in Istanbul's central Besiktas district chanted slogans, calling Erdogan a "murderer" and a "thief".
Theresa May asks public to trust her decision on snap poll
May, who has described herself as "not a showy politician", said she would rather talk directly to voters. MPs have voted in the House of Commons Wednesday and voted for general election on 8 June.
Turkish election authorities said preliminary results showed 51.4 percent of voters had backed constitutional changes and giving Erdogan new powers.
The OSCE Office for Democratic Institutions and Human Rights (ODIHR) and the Parliamentary Assembly of the Council of Europe (PACE) monitors "exceeded their limits", he said. "From the German government's point of view, Turkey must. clear up the questions that have been raised".
Speaking at a press conference in Brussels, the commission's spokesman added: "As far as the future is concerned, as President Juncker has said in the past, we encourage Turkey to move closer to the European Union again and not to move even further and faster away from us".
Turkey rejected on Tuesday the European Union call for referendum probe. Erdogan rejected criticism from global monitors who said he had been favored by an "unequal campaign".
Meanwhile, a defiant Erdogan, whose narrow victory exposed the nation's deep divisions, has said the vote ended all debate on the more powerful presidency he has long sought.
The European Union also urged a probe into the poll fraud claims after global observers voiced concerns, but US President Donald Trump called his Turkish counterpart to offer his congratulations.
Comments