They were also flown at the World Student Games by South Korean supporters during a welcome ceremony at the World Student Games in South Korea.
Picture: Chung Sung-Jun/Getty Images
The flags were flown in a public setting as recently as 6 April 2017, when South Korean fans waved unification flags while cheering for North Korean players during the IIHF women's world ice hockey championships, division II, group A competition match between South Korea and North Korea in Gangneung.
South Korea won that fixture 0-3, with two goals in the first period, one in the second.
Picture: JUNG YEON-JE/AFP/Getty Images
The two countries have marched separately in Olympic competition since the 2008 Summer Olympics.