Turkey's premier warns opposition against street protests
But Binali Yildirim warned that calling for street protests was unacceptable.
The HDP isn't the only party to file a request seeking the referendum's annulment due to voting irregularities.
A member of Turkey's main opposition party says the party plans to go the country's top court to challenge the electoral board's 10-1 decision to uphold the results of the referendum expanding the president's powers.
"We can not stay silent over regime attacks anymore", Trump told Erdogan, the source said.
Turkey's main opposition party urged the country's electoral board Monday to cancel the results of a landmark referendum that granted sweeping new po.
U.S. President Donald Trump calls Turkish counterpart Recep Tayyip Erdogan on April 17, 2017 to congratulate him on constitutional referendum "victory".
To the dismay of opposition parties and "No" supporters, the YSK made a last-minute decision on Sunday to accept ballot documents in envelopes without an official stamp.
Both Turkey's bar association and global election monitors from the Organisation for Security and Cooperation in Europe (OSCE) said that the illegal move may have swung the knife-edge vote, which will give Mr Erdogan the power to appoint and fire ministers, name half the members of the country's highest judicial body, hold the leadership of a political party while in office, and possibly stay in power until 2029.
"Calling people to the street is wrong and is outside the line of legitimacy", Yildirim said, adding, "we expect the main opposition party's leader to act more responsibly".
However, thousands continued to protest Sunday's referendum, which has set into motion the transformation of Turkey's system of government from a parliamentary to a presidential one that would give more power to President Recep Tayyip Erdogan.
Erdogan has dismissed the criticism from the observer mission, telling the monitors that they should "know your place".
Observers from the Organization for Security and Cooperation in Europe (OSCE) and the Council of Europe said Sunday's referendum had been an uneven contest.
Sunday's referendum endorsed by a narrow margin the largest overhaul of Turkey's political system since the founding of the republic almost a century ago, giving Erdogan sweeping authority over the North Atlantic Treaty Organisation member-state.
Foreign Minister Mevlut Cavusoglu said that Erdogan and Trump would meet in person next month, before a North Atlantic Treaty Organisation summit.
"We are going to evaluate the objections before noon", Sadi Güven told reporters in Ankara Wednesday morning.