The talent agency that represents K-pop group BTS on Tuesday apologized over one of its members wearing an offensive T-shirt that depicted an atomic bomb exploding over Japan, and other members having earlier worn hats that carried the Nazi guard insignia.

In a statement, agency Big Hit Entertainment sincerely apologized for what happened and vowed to reach out to Japanese and Korean groups representing A-bomb survivors "in order to explain and apologize for the hurt caused."

"We'd like to clarify that all Big Hit staff and artists, including BTS, do not regard war or atomic bombs lightly. We're against these things, and we have no intention to hurt those who were victims of the atomic bombs."