Leading South Korean wrestler Ryu Han-su has won a gold medal at the world championships.

Ryu topped the men's Greco-Roman 66-kilogram competition on Tuesday on the second day of the 2017 World Wrestling Championships currently under way in Paris.

He defeated Mateusz Bernatek of Poland 2-1 in the final round held at AccorHotels Arena.

It was the 29-year-old's second gold medal at the championships since earning his first in 2013 and taking home a silver in 2015.