Turkish President Tayyip Erdoğan called the prime minister and the leader of nationalist party to congratulate them on the result of Sunday's referendum, which were "clear", presidential sources said on Sunday.
Sources in Erdoğan's office said he told Prime Minister Binali Yıldırım he was grateful to the nation for showing its will at the polls.
With 98.2 percent of the ballot boxes opened, 51.31 percent of the votes were for "Yes", backing the referendum, the state-run Anadolu agency reported.