According to Yonhap news agency, the rally was organized by far-right South Korean Patriots Party in front of Seoul Station, when a North Korean delegation arrived there.
"The Pyeongchang Winter Olympics is turning into 'Kim Jong-un's Pyongyang Olympics' that effectively recognizes its nuclear armaments and propagates the North Korean regime," the party said as quoted by the media outlet.
인공기를 불태울 정도로 열정적인 분들이 왜?— 땡이짱구집사 (@suda_86) 22 января 2018 г.
mb와503 특활비 횡령,아랍에 군인들과 무기
가져다 준거에 대해서는 항의 시위 한번 안할까나?
보수단체, 현송월 도착 서울역광장서 인공기·김정은 사진 태워(종합) https://t.co/io5CpKiSgL
Seoul police intervened the rally and extinguished the flames, the publication said.
On January 9, Pyongyang and Seoul reached an agreement on the participation of North Korean athletes in the Olympics.
On Saturday, a four-party meeting between North, South Korea, the International Olympic Committee (IOC) and organizing committee of the 2018 Olympics took place in the Swiss city of Lausanne. The meeting was dedicated to North Korea's participation in the Winter Games.
The IOC later announced that the unified Olympic team of the two Korean states will take part in women's ice hockey, while athletes from North Korea will compete in figure skating, short track and skiing.