South Korean singer Wheesung, who also went by the stage name Realslow, has died at his home in Seoul, reports say.

The K-pop sensation — real name Choi Whee-sung — was discovered dead in his Gwangjin-gu, Seoul, home around 6:30 p.m. on Monday, March 10, The New York Times confirmed. Fire officials told the outlet that Wheesung, who struggled with drug abuse, was in a state of cardiac arrest when he was found.

South Korean singer Wheesung has been found dead at his Seoul home at the age of 43. Authorities discovered the singer, whose real name was Choi Whee-sung, in a state of cardiac arrest, noting that a “significant amount of time” had passed before his body was found. Officials confirmed there were no signs of foul play.