BTS / Xportsnews

BTS has been hit with a plagiarism lawsuit in the United States over its song “SWIM,” prompting agency BigHit Music to firmly reject the allegations and vow to fight the case in court.

"The lawsuit contains only the plaintiffs' unilateral claims," BigHit Music told Xportsnews Friday.

"We clearly maintain that 'SWIM' is an independent, original work. We will respond firmly through the legal process."

The statement came after Billboard reported Thursday that songwriters Steve Cooper, John Sandler and Graylin Johnson filed a lawsuit the previous day, alleging that BTS' “SWIM” is substantially similar to a demo song of the same title that they had written.