President of Turkey Recep Tayyip Erdogan has ratified amendments to the country's Constitution, says a message on the website of the Turkish presidential administration February 10.
Mr Erdogan's ruling AK party argues that Turkey's current fragile economic and security situations needs strong leadership, but opponents have already voiced fears about the authoritarian nature of the bill.
"I hope "sovereignty will rest unconditionally with the nation" on April 16 when the referendum will be held", the state owned Anadolu news agency quoted Deputy Prime Minister Numan Kurtulmus, as saying.
"With the president's approval, eyes are now on the YSK (High Election Board)".
The new proposed constitution allows for the president to maintain ties to a political party.
Mr Erdogan's approval of the legislation comes six months after an attempted coup against him by a rogue military faction, in July previous year.
Amendments to the Constitution got more than 330 votes in the Turkish Parliament, which is the minimum number of votes needed for holding a referendum.
The move has been criticized by opposition parties as an attempt by the president to grab power, but Prime Minister Binali Yildirim argued the vote would ultimately put more power into the hands of the people who would pick the government and the president.
The main opposition has accused Erdogan - seen as increasingly autocratic after 14 years in power as both prime minister and president - of trying to decapitate parliament.
Now we will take power from Parliament and give it to one man.
President Erdogan has steadily consolidated his control of Turkey's branches of government since his election in 2014.