The lawsuit was filed by Steve Cooper, John Sandler and Greylyn Johnson, who claim BTS' chart-topping single is similar to their own unreleased demo.

BTS smash hit “Swim” is at the center of a copyright lawsuit claiming the Arirang song stole elements from an unpublished demo by three songwriters.

BTS has been hit with a plagiarism lawsuit in the United States over its song “SWIM,” prompting agency BigHit Music to firmly reject the allegation...