UPDATE - Yes votes ahead in Turkish referendum

UPDATES WITH FRESH FIGURES

By Satuk Bugra Kutlugun

ANKARA (AA) - With more than three-quarters the votes counted in Turkey’s constitutional referendum, Yes votes led on 53.93 percent.

At 6.45 p.m. local time (1545GMT), 78.36 percent of votes had been counted.

Figures from vote counts showed Yes on 53.93 percent -- 20,076,700 votes -- while No had 46.07 percent, or 17,150,823 votes.

Turkey headed to the polls on Sunday in a referendum on a 18-article bill that would see the country switch from a parliamentary to a presidential system.