"We take full responsibility for this oversight," Upper Room wrote in a statement.

Mark of NCT Dream performs on stage during iHeartRadio Channel 95.5's Jingle Ball 2024 Presented By Capital One at Little Caesars Arena on Dec. 10, 2024, in Detroit.

Scott Legato/Getty Images for iHeartRadio

Mark Lee — a K-pop star who was, up until recently, a member of NCT — has come under fire for photos that show him wearing a Confederate flag T-shirt, something his Upper Room label has now apologized for in a statement.

Posted on Tuesday (June 23), a block of text on the company’s Instagram Story began, “We would like to extend our sincere apologies for the concern, discomfort, and disappointment caused by the vintage T-shirt that appeared in a recently shared photograph.”