Yohan, also known as Kim Jeong-Hwan, passed away on June 16 at the young age of 28. Due to his family's wishes, the cause of death was undisclosed. Yohan was known for his work in the group, TST.
TST's record label, KJ Entertainment had recently confirmed the news stating,
"Hello, this is TST’s agency KJ Music Entertainment.
We have come to tell everyone very sad and heartbreaking news.
TST member Yohan passed away on June 16.
The bereaved family is in great sadness. We sincerely ask the media to refrain from spreading rumors and speculation on Yohan’s cause of death.
We would like to send our deepest condolences to Yohan as goes on."
— KJ Music Entertainment