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.

The artist was known for popularizing the musical genre in the country, but convictions for drug abuse damaged his image.